Best freelancing sites for programmerslavori

Project Description Calling all programmers, engineers, innovators, and dreamers! This is an open competition where anything goes—your only goal is to enhance an advanced Python-based optimization tool for ramjet engine design. Whether you’re using Python, AI tools, custom algorithms, or sheer ingenuity, it’s your final product that matters. The tool is built for Mach 2.5 supersonic combustion, modeling real gas effects and compressible flow physics. Your mission: 1. Make Simulations More Accurate: Improve the physics, modeling, and reliability. Optimize Performance: Use innovative methods to identify high-performing designs. 2. This is your chance to showcase your skills, creativity, and innovation. The best final solution wins, regardless ...

There are many levels of expertise in design. We are not looking for an adequate or even a GOOD designer here. We are looking for a GREAT DESIGNER. Someone who has both the technical expertise to put images on a website AND someone who can create the Vision itself only from the marketing/brand vision and the assets at hand. We need to be able to communicate WHAT the CONCEPT of the site is AND GIVE THE ASSETS, and you be able to take it to the finish line from there by creating the look and feel and functionality (we have programmers that can help you with that part --- but you must be able to convey what those design elements are and produce them). We are looking for a "developer/builder," not an "assembler." We need: Fishbowl x Wooco...

I'm looking for a freelancer to create a new application/portal using CLASSIC ASP (vbscript) within a timeline of 4/5 days (test included). Informations are sufficient to provide an estimate (times and costs). No .Net, no C#, no PHP, no Python, no third party controls, no compiled objects. Vbscript only. JavaScript client side if really needed. The use of free objects/sources freely available on the internet is really appreciated (and reduces testing and development time). ----- General info ----- I would like to create a web application (only in ASP Classic/Vbscript, no .Net) that manages, after login the filling out of a web-template that will be used to print a quote/estimation. NO backend. The form must have 2 sections: The first one (see picture in attachment) man...

I'm a 15-year-old aspiring graphic designer seeking guidance on how to start earning money online through freelancing. My primary focus is on creating illustrations, but I'm open to exploring other areas within graphic design as well. I'm looking for an experienced freelancer who can provide me with practical tips, resources, and industry insights to help me kick-start my freelancing journey. Please share your experience and how you can help me.

...detail-oriented Talent Scout to identify and onboard top rising talents across various freelancing platforms, including Upwork, Freelancer, Contra, and others. The ideal candidate will focus on finding newly joined but highly promising freelancers who offer exceptional skills at competitive rates. This role is crucial to ensuring our business collaborates with top-tier talent while staying within budget constraints. Key Responsibilities: 1. Talent Identification: - Search for newly joined freelancers with high potential and growing profiles. - Evaluate skills, ratings, reviews, and project portfolios to identify top rising talent. 2. Platform Research: - Navigate and explore various freelancing portals (e.g., Upwork, Freelancer, Contra). - Stay...

...detail-oriented Talent Scout to identify and onboard top rising talents across various freelancing platforms, including Upwork, Freelancer, Contra, and others. The ideal candidate will focus on finding newly joined but highly promising freelancers who offer exceptional skills at competitive rates. This role is crucial to ensuring our business collaborates with top-tier talent while staying within budget constraints. Key Responsibilities: 1. Talent Identification: - Search for newly joined freelancers with high potential and growing profiles. - Evaluate skills, ratings, reviews, and project portfolios to identify top rising talent. 2. Platform Research: - Navigate and explore various freelancing portals (e.g., Upwork, Freelancer, Contra). - Stay...

Saya seorang profesional yang berkeinginan untuk memasuki dunia freelancing di bidang Internet Marketing, khususnya melalui platform Facebook, dan saya membutuhkan bantuan untuk membuat profil freelancer yang menonjol di Freelancer.com. Tujuan utama saya adalah untuk menarik klien yang membutuhkan keahlian saya dalam strategi pemasaran online yang efektif dan efisien biaya. - Kualifikasi Saya: - Pengalaman dalam mengelola dan memaksimalkan kehadiran bisnis di Facebook. - Kemampuan untuk menciptakan konten menarik yang meningkatkan interaksi tanpa biaya iklan. - Keahlian dalam analisis performa pemasaran media sosial dan peningkatan engagement organik. - Yang Saya Butuhkan: - Seseorang dengan pengalaman dalam penulisan profil profesional di Freelancer.com. - Saran strateg...

I'm looking for a versatile and proactive full stack developer who can handle multiple concurrent software development tasks daily. We have sub-clients that require freelancing work for various types of projects. Key Responsibilities: - Develop, debug, and integrate systems using our proprietary development stack - Frequent client interaction for requirement gathering - Inherit and maintain existing codebases - Manage up to 10 simultaneous projects in a dynamic environment - Ensure the quality of code through regular code reviews and automated testing practices Ideal Skills and Experience: - Proficient in Python, Java, JavaScript, and TypeScript - Primarily experienced in backend systems development - Strong client-facing skills for regular requir...

...detail-oriented Talent Scout to identify and onboard top rising talents across various freelancing platforms, including Upwork, Freelancer, Contra, and others. The ideal candidate will focus on finding newly joined but highly promising freelancers who offer exceptional skills at competitive rates. This role is crucial to ensuring our business collaborates with top-tier talent while staying within budget constraints. Key Responsibilities: 1. Talent Identification: - Search for newly joined freelancers with high potential and growing profiles. - Evaluate skills, ratings, reviews, and project portfolios to identify top rising talent. 2. Platform Research: - Navigate and explore various freelancing portals (e.g., Upwork, Freelancer, Contra). - Stay...

Je cherche des développeurs indien qui pourrait créer des sites applis etc…

SEO Backlinking for 28 Sites as detailed in the client list

SEO Backlinking for 27 Sites as indicated in the client list spreadsheet

...detail-oriented Talent Scout to identify and onboard top rising talents across various freelancing platforms, including Upwork, Freelancer, Contra, and others. The ideal candidate will focus on finding newly joined but highly promising freelancers who offer exceptional skills at competitive rates. This role is crucial to ensuring our business collaborates with top-tier talent while staying within budget constraints. Key Responsibilities: 1. Talent Identification: - Search for newly joined freelancers with high potential and growing profiles. - Evaluate skills, ratings, reviews, and project portfolios to identify top rising talent. 2. Platform Research: - Navigate and explore various freelancing portals (e.g., Upwork, Freelancer, Contra). - Stay...

...detail-oriented Talent Scout to identify and onboard top rising talents across various freelancing platforms, including Upwork, Freelancer, Contra, and others. The ideal candidate will focus on finding newly joined but highly promising freelancers who offer exceptional skills at competitive rates. This role is crucial to ensuring our business collaborates with top-tier talent while staying within budget constraints. Key Responsibilities: 1. Talent Identification: - Search for newly joined freelancers with high potential and growing profiles. - Evaluate skills, ratings, reviews, and project portfolios to identify top rising talent. 2. Platform Research: - Navigate and explore various freelancing portals (e.g., Upwork, Freelancer, Contra). - Stay...

I have two WordPress sites that are experiencing indexing errors. I need a professional to fix these issues and improve their SEO. The sites are and https://associazionepelagos.org. Key Requirements: - Fix indexing errors on both sites - Optimize page speed - Enhance SEO, particularly in headers and titles - Utilize Google Analytics and Yoast SEO for improvements Ideal Skills: - Expertise in WordPress - Strong SEO knowledge - Experience with Google Analytics and Yoast SEO - Ability to improve site speed

I'm in need of a professional who can connect with Casino Affiliates primarily in Europe and Latin America. The ideal candidate should be skilled in: - Email outreach - Social media engagement - Networking at events and conferences - Focus on connecting our website with the appropriate Casino affiliates Payment will be based on the traffic you can drive to our site. Experience in the gambling industry and with casino affiliates is a plus. The price in the post is fictitious

...passionate and skilled game developers, designers, 3D model artists, and other contributors to join this exciting project. This is a great opportunity for freelancers looking to collaborate on a unique game and gain valuable experience. Project Timeline: The project duration is one month, with the possibility of an extension based on progress and requirements. Payment Structure: Payment will be in the form of profit-sharing. Profit-sharing duration: Up to the first three months post-release. All contributors will receive a fair percentage of the game's profits based on their role and contribution. Roles Needed: Game Developers: Programmers with experience in Unity or Unreal Engine. Game Designers: Create engaging mechanics, levels, and UI/UX desig...

I'm looking for a skilled WordPress developer to create five E-commerce websites for selling physical products. Key Requirements: - Expertise in WordPress and WooCommerce - Experience in developing E-commerce websites - Ability to implement product filtering and search features - Knowledge of best practices for E-commerce site design and user experience The primary purpose of these WordPress websites will be to facilitate the online sale of physical products. As such, the selected freelancer will need to be able to design and implement all necessary E-commerce functionalities. The most important feature for these sites will be the ability for customers to filter and search for products. The ideal candidate for this pro...

Nous recherchons un(e) développeur(se) web freelance expérimenté(e) pour nous aider à améliorer et moderniser nos sites web, avec un focus particulier sur www.roulage.be. L'objectif est d'élargir notre audience, optimiser l'expérience utilisateur et intégrer de nouvelles fonctionnalités interactives. Missions principales : 1. Optimisation de l’expérience utilisateur (UX/UI) : Refonte de l’interface pour une navigation plus intuitive. Adaptation du site à un public plus large (conducteurs particuliers et professionnels). 2. Développement et intégration de nouvelles fonctionnalités : Création d’un outil interactif de calcul des amendes. Mise...

I'm looking for a seasoned freelancer who can help me enhance my freelancing account and increase my monthly bidding. The ideal candidate should have professional experience in product description, copywriting, editing, and podcasting. Key Responsibilities: - Guide me in building a strong freelancing profile. - Assist in increasing my bidding capacity each month. - Help in crafting engaging product descriptions for marketing materials. - Enhance the overall quality of my marketing materials. - Develop strategies for better client engagement and retention. - Craft winning project proposals to increase acceptance rate. - Optimize my freelancing profile for search algorithms. - Revamp my portfolio for better client appeal. - Track...

ended freelancer will provide AI original files

...detail-oriented Talent Scout to identify and onboard top rising talents across various freelancing platforms, including Upwork, Freelancer, Contra, and others. The ideal candidate will focus on finding newly joined but highly promising freelancers who offer exceptional skills at competitive rates. This role is crucial to ensuring our business collaborates with top-tier talent while staying within budget constraints. Key Responsibilities: 1. Talent Identification: - Search for newly joined freelancers with high potential and growing profiles. - Evaluate skills, ratings, reviews, and project portfolios to identify top rising talent. 2. Platform Research: - Navigate and explore various freelancing portals (e.g., Upwork, Freelancer, Contra). - Stay...

Find leads using your subscription for some scraper or google maps Phone numbers must be formated as +XX XXX XXX XX XX Dublicates must be removed (you may use Online Duplicate String Remover/Finder) I'm looking for the best price for 10,000 leands in the UK for any niche Required fields - UK phone number (formatted + dublicates removed) - website? - (if they have one) - company name Exclude popular niches like: - roofing - autodetailing - beauty salon - fence - home services nich like plumbers / kitchen and bathrooms remodeling - gyms (hello CM) - law firs - painter and decorator - ceiling - removals

Requirements: Technologies: Development using React and PHP. Functionality: All modern features and full compliance with relevant regulations in Western Europe. Experience: Only freelancers with proven experien...freelancers with proven experience in developing food delivery websites. Budget: Fixed. No questions or negotiations regarding the budget. Additional Terms: only Pre-developed projects in this domain are welcome, provided they meet the requirements. No private messages. Final price must be provided directly. Reference sites and a detailed requirements document will be shared. I expect clear and precise responses. If you meet the requirements, I look forward to your offer. DOC FOR the

As a budding freelancer with a knack for programming and technical writing, particularly in the finance and banking sector, I'm in need of an experienced mentor who can help me navigate the freelancing world. Skills I Offer: - Programming and Development: I have a solid understanding of various programming languages and can offer my services in software development, debugging, and coding tasks. - Technical Writing: My writing skills, particularly in technical documentation, can be utilized for creating user manuals, product descriptions, and other technical content. What I Need: - Guidance on how to effectively market my skills on this platform. - Tips and strategies to secure my first few jobs. - Insights on pricing my services competitively. My Ideal Mentor:...

Hi Nimra, I have another project for you. I'd like six sites content to be created and inserted into the website. Would you be able to complete this in the next week? Please let me know your thoughts. I've updated our shared document:

Hi, I'm Deepa, a BBA graduate currently pursuing an MBA, working in HR coordination at a mid-level company. I'm exploring freelancing opportunities to leverage my skills and passion for enhancing organizational efficiency and employee engagement. I'm particularly interested in projects that involve: - Interview Coordination: I have hands-on experience in coordinating interviews and can help streamline the process for your organization. My ideal projects would be those that require: - HR Consulting: Offering insights and strategies to improve your HR processes. - Interview Coordination: Assisting in the scheduling and management of interviews to ensure a smooth process. Skills and Experience: - Strong foundation in Business Administration and Human Re...

Saya seorang profesional yang berkeinginan untuk memasuki dunia freelancing di bidang Internet Marketing, khususnya melalui platform Facebook, dan saya membutuhkan bantuan untuk membuat profil freelancer yang menonjol di Freelancer.com. Tujuan utama saya adalah untuk menarik klien yang membutuhkan keahlian saya dalam strategi pemasaran online yang efektif dan efisien biaya. - Kualifikasi Saya: - Pengalaman dalam mengelola dan memaksimalkan kehadiran bisnis di Facebook. - Kemampuan untuk menciptakan konten menarik yang meningkatkan interaksi tanpa biaya iklan. - Keahlian dalam analisis performa pemasaran media sosial dan peningkatan engagement organik. - Yang Saya Butuhkan: - Seseorang dengan pengalaman dalam penulisan profil profesional di Freelancer.com. - Saran strateg...

I want a design that's incredibly simple, beautiful and catching the person's attention. The book is called: Lying - How to get anything you want by Place Holder (for now) So I want a creative book cover that is minimalistic and say that title, subtitle and author name (Place Holder) while using imagery or symbols that also helps communicate the book's purpose (the book is actually is a book to warn and educate you about the price you're not aware that you're paying by lying).

I'm looking to kickstart my journey as a freelance content writer. I need assistance in setting up my profile on various freelancing platforms, crafting an appealing portfolio, and understanding how to effectively pitch for jobs. Your expertise in freelance consultancy and content writing will be invaluable to me. Please assist with setting up profiles on Upwork and Fiverr.

Programmer Wanted for IoT Door Lock Project – Fixed Payment of $100 USD We are hiring programmers to work on an IoT-based door lock project for $100 USD. Only programmers who agree to this fixed payment will be hired immediately. Please note: no hardware costs will be covered. We only require your coding expertise. Project Title: Secure Communication Protocol and Encryption in IoT Door Lock Components to Work With: 1. Raspberry Pi 4 2. Solenoid Lock 3. Jumper Wires 4. Relay Module Project Requirements: This project focuses on secure communication and encrypted database protection for a door lock system. •Website Design: Simple but fully functional and user-friendly. •Focus on Functionality: Prioritize features over aesthetics. •No...

Greeting from freelancer.com!!!! One of our tech giant client is actively looking for Physics, Chemistry, and Biology teacher for a long term freelancing project. Below the details ---> Skillset 1 (Physics, Chemistry, Biology): Rate questions, answers, and MCQs generated by LLM, ensuring they align with high school and secondary levels. ---> Skillset 2 (Kids Learning Apps): Rate apps/websites for kindergarten to primary students based on client guidelines. ********************************************** Eligibility ********************************************** > Min 2+ years teaching experience in grades 8-12, 3 years in Pre-K-7 > Retired teachers must be within 5 years of retirement > Teaching license or certificate >>>> Native...

I'm looking for a UI designer to spruce up our Google Site and Google Slides for our company profile. It's crucial that these platforms are transformed into visually appealing and professional representations of our agricultural/commodities company. Key Requirements: - Edit the site and slides to enhance the overall User Interface (UI) - Implement a modern and clean font style - Utilize earthy tones (greens, browns, beiges) for the color scheme - Ensure the site and slides have a responsive design that looks good on all devices. - Use high-quality, relevant images to support the agricultural/commodities theme. - Maintain consistent branding across the site and slides, including logo usage and company colors. - Implement accessibility best practices t...

...enthusiasm lies in exploring new technologies and implementing innovative solutions. With experience in technologies such as Python, JavaScript, and Tailwind CSS, I strive to create impactful projects in web development. Currently, I am pursuing a Master’s in Computer Applications (MCA) while diving deeper into programming concepts and expanding my skill set. I am particularly interested in freelancing opportunities and collaborations that allow me to work from home. My goal is to grow as a full-stack developer and contribute to meaningful projects. In addition to my technical expertise, I am deeply committed to fostering learning environments where others can benefit from my knowledge. With a blend of creativity and logical thinking, I bring dedication to every task I unde...

Here's a draft message to find an India-based assistant proficient in Notion: I am currently seeking a highly skilled and detail-oriented assistant based in India who is proficient in Notion for managing notes and related tasks. **Requirements:** - Expertise in using Notion for note management and organization. - Strong attention to detail and the ability to handle tasks efficiently. If you have the required skills and are interested in this opportunity, please submit your best hourly rate for providing Notion-related services.

...arquitectura de realizarlo? --- We have a sales module that we want to be native on Android. We can provide an API or whatever you need for you to build a native app on Android and iOS just for the sales module. Log in at and then access the sales module. 1) This must be compatible so that you can print from Bluetooth printers. It is a POS software but natively. 2) We need the entire sales module complete with all the functions. So before bidding, enter the link above and look at the functions that the sales module has. When you access it, click on Login and it does not ask for a password. We are PHP programmers but we do not have experience in apps. Source code, documentation, apps must be included and how the development was done must be shown

Opportunity for Arab or Jordanian Freelancer!     We are offering competitive rates for talented and experienced Arab or Jordanian freelancers who are fluent in both Arabic and English and actively working on platforms like Freelancer.com. This is a unique opportunity to be part of a meaningful project aimed at helping young Jordanians succeed on these platforms.   As a mentor, you will guide aspiring freelancers through every step of their journey—starting from creating and optimizing their profiles to learning how to secure projects and effectively manage client relationships. Learning sessions are gender-segregated so that everyone can feel comfortable asking the necessary questions they need to learn and succee...

I am looking for a talented copywriter who can help me create engaging and informative content. The primary purpose of the project is to educate and inform the audience. Ideally, you should have: - Experience in creating compelling copy that can capture and hold the reader's attention. - A knack for simplifying complex topics into easily digestible content. - Excellent research skills to ensure all information is accurate and relevant. I'm looking for someone who can deliver high-quality work consistently. Please provide examples of your previous copywriting work.

Dear Provider, I am reaching out to explore potential collaboration opportunities for guest posting on your network of websites. We are particularly interested in high-quality sites that align with the following criteria: Semrush AS 25+ and 500+ Semrush Traffic Spam Score - 5 or lower business,technology,law,parenting,mommy,lifestyle niche Could you please share a list of your available websites and pricing details? We are keen to establish a long-term partnership and are looking for competitive pricing for bulk orders.

...without permission. I am offering a commission of 200 RMB. The ideal freelancer for this job should have experience with web scraping and programming, as well as a strong understanding of ethical considerations in this field. Please note, I am looking for a solution that can be used at any time to download eBooks from this site. The URL of the library archive website is: " For your convenience, you can use my account to log in to this website 账号：alice003 密码：12345678aa 现在里面的书只能试读十几页 我想下载下来整本书 The books inside can only be read for a trial of a dozen pages now I want to download the entire book 我找了几个程序员，但是他们都说找不到这个网站上 电子书的数据，找不到源头，所以就下载不到完整的电子书 I found a few programmers, but they couldn't find the source data of the books on this webs...

...without permission. I am offering a commission of 200 RMB. The ideal freelancer for this job should have experience with web scraping and programming, as well as a strong understanding of ethical considerations in this field. Please note, I am looking for a solution that can be used at any time to download eBooks from this site. The URL of the library archive website is: " For your convenience, you can use my account to log in to this website 账号：alice003 密码：12345678aa 现在里面的书只能试读十几页 我想下载下来整本书 The books inside can only be read for a trial of a dozen pages now I want to download the entire book 我找了几个程序员，但是他们都说找不到这个网站上 电子书的数据，找不到源头，所以就下载不到完整的电子书 I found a few programmers, but they couldn't find the source data of the books on this webs...

PLEASE READ COMPLETELY PLEASE READ COMPLETELY PLEASE READ COMPLETELY I have about 7-10 websites on Wordpress (siteground) I have a second siteground account and I need ALL my websites backed up (emailed to me) and then uploaded to the new Wordpress hosting under the new site ground account So transfer /backup 7-10 sites from one site ground (wordpress) to another All sites are editable by elevator and need to stay that way once switched and look the exact same - I’ll do the domains Give me the total price or price per site put in ur bid “I will charge ____ and it will take me ______” only these will be checked

...read a non-fiction programming book for my YouTube channel. The primary goal is to engage viewers by clearly explaining the concepts presented in the book. Key Requirements: - Exceptional verbal skills and clear pronunciation - Ability to explain complex programming concepts in an understandable and engaging manner - Experience with non-fiction content preferred - Background or knowledge in programming is a plus - Comfort with YouTube platform and understanding of its audience Your role will involve: - Reading the book in an engaging manner - Breaking down and explaining the concepts in detail - Making the content accessible for a wide range of viewers, from beginners to more experienced programmers. If you have a passion for programming, a talent for...

Here’s the updated brief for a freelancer or technical person: Job Title: Freelancer Needed to Connect Twilio and Zoho to WhatsApp Description: I am looking for a skilled professional to set up and integrate Twilio with Zoho CRM to enable WhatsApp messaging. The integration should allow me to send and receive WhatsApp messages directly through Zoho CRM using Twilio’s API. Requirements: 1. Twilio Setup: • Configure my Twilio account for WhatsApp Business API. • Register and verify a WhatsApp Business number through Twilio. • Ensure compliance with WhatsApp’s guidelines for message templates and usage. 2. Zoho CRM Integration: • Install and configure the Twilio extension in Zoho CRM. • Set up workflows in Zoho C...

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I'm looking for a proficient SEO professional to provide high-quality, do-follow backlinks from DA 50+ sites, specifically related to engineering. Requirements: - 100 new backlinks from DA 50+ sites in the engineering sector. - Backlinks should exclusively come from industry blogs, not educational websites, professional forums, or classified ads. - All links must be new, working, and provided in a report with the Domain Rating (DR) for milestone release. We have list of existing list of links. - The budget is SGD 0.20 per link, totaling SGD 20 for 100 links. - Previous SEO work sample reports are required for consideration. Please note: - The main goal of this project is to improve my site's search engine ranking. - Time wasters or au...

I'm looking for a skilled professional to install the open-source Costasilla software on a Linux-based server I will provide. The project also includes integrating this software with my Google Sites installation on ganeshyoga.de. Key Tasks: - Install Costasilla software on my provided Linux-based server - Use SSH for server access and management - Set up an example Google Sites website that integrates the Costasilla booking widget - Ensure the integration works similarly to my existing website on - Implement a scheduled backup system for the Costasilla database. - Provide detailed documentation for the installation and integration process, including any troubleshooting steps, so that other yoga schools will have an easier path in future. Id...

I'm in need of an expert in Google Sites to help me build a company information website. The primary purpose of this site will be to present our business and the services we offer to potential clients. Key Requirements: - Proficient in Google Sites - Experienced in creating company information websites - Ability to design a user-friendly interface - Experience with SEO techniques to enhance site visibility The site should include a dedicated section for our services. The ideal freelancer for this project would be someone who understands how to present information in a clear, engaging way that reflects our brand and appeals to our target audience. The project needs to be completed within 1 month.

I'm in need of a professional with practical thinking and precision drilling skills for the installation of plastic guardrails at various industrial sites across the UK. Key Responsibilities: - Drilling and installing safety barriers (guardrails) at multiple locations - Ensuring the accuracy and safety of each installation Ideal Skills: - Construction or installation experience, preferably with safety barriers - Proficiency in drilling and installation tools - Practical and critical thinking skills for problem-solving on-site - Ability to travel throughout the UK The guardrails to be installed are made of plastic, so experience with this material is a plus. I value accuracy and practical thinking to ensure the job is done safely and efficiently.

...without permission. I am offering a commission of 200 RMB. The ideal freelancer for this job should have experience with web scraping and programming, as well as a strong understanding of ethical considerations in this field. Please note, I am looking for a solution that can be used at any time to download eBooks from this site. The URL of the library archive website is: " For your convenience, you can use my account to log in to this website 账号：alice003 密码：12345678aa 现在里面的书只能试读十几页 我想下载下来整本书 The books inside can only be read for a trial of a dozen pages now I want to download the entire book 我找了几个程序员，但是他们都说找不到这个网站上 电子书的数据，找不到源头，所以就下载不到完整的电子书 I found a few programmers, but they couldn't find the source data of the books on this webs...