Apps with 'Well documented' feature
Vim ("Vi IMproved") is an advanced text editor that allows syntax highlighting, word completion and has a huge amount of contributed content. It also has a GUI version called GVim.
Unreal Engine is a professional suite of tools and technologies used for building high-quality games across a range of platforms.
Unison is a file-synchronization tool for Unix and Windows.
Web2py is an open source web application framework. Web2py is written in the Python language and is programmable in Python.