Even better, see all the alternatives:
http://alternativeto.net/software/evernote/?license=opensour...
To be fair though, TagSpaces isn't listed, and I think it's really interesting. Another one not listed is http://elephant.mine.nu/
Personally, I favor emacs org files with version control, but I admit sync across devices might be an issue for many on that front. I also live in the terminal more than most.