A code-understanding tool based on cscope and ctags. Please go to the GitHub page for more information.
Homepage: http://ruben2020.github.io/codequery
GitHub: https://github.com/ruben2020/codequery
If you are a developer like me, you may find this program useful in finding code. You can add,edit,delete,search, and browse source code you might get from a book or posted on the web.