ActiveCoder 4+

ActiveCoder provides a missing feature of Xcode --- bookmark. Even better, it creates bookmarks automatically for you. Just launch this app, and use Xcode as you normally would. Whenever you want to open the file you opened or edited, simply click the bookmark icon sitting on the status bar of your Mac, ActiveCoder will show you a list of files and workspaces you have been working on. One double click is all it takes to instantly resume your work on a file. No need to go through the time consuming process of opening a workspace, spending time navigating through the projects and groups to find the file you were working on.

Usage:

1) After launched, the app will create a bookmark icon on your Mac's status bar.
2) Now, launch Xcode, and open a file and work on it for a while. ActiveCoder will create a bookmark automatically.
3) Switch to other files, and click the bookmark icon, and double click on the bookmark created. It will bring Xcode back to the file you opened a moment ago. It works even Xcode isn't running.

Workspaces are ordered by accessing time, latest first.

Files within a workspace or project can be sorted in the following ways:
1) Auto - files are ordered based on how long they were opened. Whichever file being worked on the most appears on top.
2) Recent - files are ordered based on their access time, latest first. If you are quickly switching between a few files mostly, then this is preferable.
3) A - Z - files are ordered alphabetically based on their name.
4) Z - A - similar to A - Z, but in reverse order.

You can always remove files that get in there by accident by deleting them.