These programs can actually modify the live wiki on the net, and proper wiki-etiquette should be followed before running it on any wiki.

To get started on proper usage of the bot framework, please refer to:

Manual:Pywikibot

Bots and Scripts
add_text.py	Adds text at the top or end of pages.
archivebot.py	Archives discussion threads.
basic.py	Is a template from which simple bots can be made.
blockpagechecker.py	Deletes any protection templates that are on pages which aren't actually protected.
category.py	Add a category link to all pages mentioned on a page, change or remove category tags.
category_redirect.py	Maintain category redirects and replace links to redirected categories.
change_pagelang.py	Changes the content language of pages.
checkimages.py	Check recently uploaded files. Checks if a file description is present and if there are other problems in the image's description.
claimit.py	Adds claims to Wikidata items based on categories.
clean_sandbox.py	This bot resets a sandbox with predefined text.
commonscat.py	Adds {{commonscat}} to Wikipedia categories (or articles), if other language Wikipedia already has such a template.
commons_information.py	Insert a language template into the description field.
coordinate_import.py	Coordinate importing script.
cosmetic_changes.py	Can do slight modifications to a wiki page source code such that the code looks cleaner.
delete.py	This script can be used to delete pages en masse.
djvutext.py	Extracts OCR text from djvu files and uploads onto pages in the "Page" namespace on Wikisource.
download_dump.py	Downloads dumps from dumps.wikimedia.org
fixing_redirects.py	Correct all redirect links of processed pages.
harvest_template.py	Template harvesting script.
illustrate_wikidata.py	Bot to add images to Wikidata items.
image.py	Script to replace transclusions of files.
imagetransfer.py	Given a wiki page, check the interwiki links for images, and let the user choose among them for images to upload.
interwiki.py	A robot to check interwiki links on all pages (or a range of pages) of a wiki.
interwikidata.py	Script to handle interwiki links based on Wikibase.
listpages.py	Print a list of pages, defined by a page generator.
login.py	Script to log the bot in to a wiki account.
misspelling.py	Similar to solve_disambiguation.py. It is supposed to fix links that contain common spelling mistakes.
movepages.py	Bot that can move pages to another title.
newitem.py	Script creates new items on Wikidata based on criteria.
noreferences.py	Searches for pages where <references /> is missing although a <ref> tag is present, and in that case adds a new references section.
nowcommons.py	This bot can delete images with NowCommons template.
pagefromfile.py	This bot takes its input from a file that contains a number of pages to be put on the wiki.
parser_function_count.py		Find expensive templates that are subject to be converted to Lua.
patrol.py	Obtains a list pages and marks the edits as patrolled based on a whitelist.
protect.py	Protect and unprotect pages en masse.
redirect.py	Fix double redirects and broken redirects. Note: solve_disambiguation also has functions which treat redirects.
reflinks.py	Search for references which are only made of a link without title and fetch the html title from the link to use it as the title of the wiki link in the reference.
replace.py	Search articles for a text and replace it by another text. Both text are set in two configurable text files. The bot can either work on a set of given pages or crawl an SQL dump.
replicate_wiki.py	Replicates pages in wiki to a second wiki within family
revertbot.py	Script that can be used for reverting certain edits.
solve_disambiguation.py	Interactive robot doing disambiguation.
speedy_delete.py	Help sysops to quickly check and/or delete pages listed for speedy deletion.
template.py	Change one template (that is {{...}}) into another.
templatecount.py	Display the list of pages transcluding a given list of templates.
touch.py	Bot goes over all pages of the home wiki, and edits them without changes.
transferbot.py	Transfers pages from a source wiki to a target wiki.
unusedfiles.py	Bot appends some text to all unused images and other text to the respective uploaders.
upload.py	Upload an image to a wiki.
watchlists.py	Allows access to the account's watchlist.
weblinkchecker.py	Check if external links are still working.
welcome.py	Script to welcome new users.

archive	Scripts no longer maintained. Please open a Phabricator task if you want to use one.
capitalize_redirects.py	Script to create a redirect of capitalize articles.
casechecker.py	Script to enumerate all pages in Wikipedia and find all titles with mixed Latin and Cyrillic alphabets.
catall.py	Add or change categories on a number of pages.
commons_link.py	This robot includes commons template to link Commons and your wiki project.
create_categories.py	Program to batch create categories.
data_ingestion.py	A generic bot to do batch uploading to Commons.
disambredir.py	Changing redirect names in disambiguation pages.
editarticle.py	Edit a Wikipedia article with your favourite editor.
flickrripper.py	Upload images from Flickr easily.
followlive.py	Follow new articles on a Wikipedia and flag them with a template.
freebasemappingupload.py		Script to upload the mappings of Freebase to Wikidata.
imagecopy.py	Copies images from a Wikimedia wiki to Commons.
imagecopy_self.py	Copy self published files from the English Wikipedia to Commons.
imageharvest.py	Bot for getting multiple images from an external site.
iamgerecat.py	Try to find categories for media on Commons.
imageuncat.py	Adds uncat template to images without categories at Commons.
isbn.py	Bot to convert all ISBN-10 codes to the ISBN-13 format.
lonelypages.py	Place a template on pages which are not linked to by other pages, and are therefore lonely.
makecat.py	Given an existing or new category, find pages for that category.
match_images.py	Match two images based on histograms.
ndashredir.py	Creates hyphenated redirects to articles with n dash or m dash in their title.
piper.py	Pipes article text through external program(s) on STDIN and collects its STDOUT which is used as the new article text if it differs from the original.
selflink.py	This bot goes over multiple pages of the home wiki, searches for selflinks, and allows removing them.
spamremove.py	Remove links that are being or have been spammed.
standardize_interwiki.py			A robot that downloads a page, and reformats the interwiki links in a standard way (i.e. move all of them to the bottom or the top, with the same separator, in the right order).
states_redirect.py	A robot to add redirects to cities for state abbreviations.
surnames_redirects.py	Bot to create redirects based on name order.
table2wiki.py	Semi-automatic converting HTML-tables to wiki-tables.
unlink.py	This bot unlinks a page on every page that links to it.
wikisourcetext.py	This bot applies to Wikisource sites to upload text.

maintenance	Framework helper scripts.
cache.py	Script for showing and deleting API cache.
colors.py	Utility to show pywikibot colors.
update_script.py	Helper script to update scripts and replace deprecated code parts.
make_i18n_dict.py	Generate an i18n file from a given script.
preload_sites.py	Preload and cache site information for each WM family.
sorting_order.py	Updates interwiki sorting order in family.py file.
update_linktrails.py	Script that updates the linktrails in family.py file.
wikimedia_sites.py	Updates the language lists in Wikimedia family files.

Others
i18n (folder)	Contains i18n translations for bot edit summaries.
userscripts (folder)	Empty folder for user scripts.
README.rst	This file (Short info of all scripts).

External packages could be required with Pywikibot: The pwb.py wrapper scripts informs about the requirement and how to install.

More precise information, and a list of the options that are available for the various programs, can be retrieved by running the bot with the -help parameter, e.g.:

python pwb.py interwiki -help