For all Linux users that didn't manage to find the links to the open-source Evernote version, called "Nevernote", developed by user Randy (baumgarr, above):
Introducing the version that is stable enough for basic use:
http://forum.evernote.com/phpbb/viewtopic.php?f=43&t=13900&start=25#p69453
..or directly to the sourceforge page of the developer:
http://nevernote.sourceforge.net/
..and even more-directly to the shared notebook note containing version 0.86 download accompanied with a description "--- To Install ---"
http://www.evernote.com/pub/baumgarr/nevernote#v=t&n=414f7e35-891a-4a7c-a326-091ab022ccc2&b=0
The instructions clearly state you have to have QT Jambi 4.5 installed, so here is a direct link to the Qt Jambi - Java bindings for Linux 32-bit. (There are also 64-bit binaries if you need them)
Please post any question regarding installation in http://sourceforge.net/apps/phpbb/nevernote/viewtopic.php?f=3&t=11
Rest assured, my installation worked without any problems and I am a pretty novice user
[My setup at the time of writing this is: Linux Ubuntu 10.4 Lucid Lynx, Sun Java 1.6.0_20, Nevernote 0.86.]
Kind regards
