I've been looking for such a tool, free and for linux, for some time now. Your tool is basic, needs some polish, but it has all the fundamental functionality. I've been using it every day for about a week now and encountered no problems. Thanks a lot!
If you are going to release this as a binary, can you compile it to be aware to look in /usr/lib64 /lib6 /usr/local/lib64 as well as the current locations??
An open, cross-platform journaling program.
A scientific plotting package.