I use Nixnote every so often to export/backup my evernotes. (I learned my lesson long ago about leaving data like that on a company's servers.) It seems to work fine for that purpose, although it's Java so installation can be a bit odd and it sometimes just breaks.
I can't speak for myself because I don't use Evernote, but I read good things about Everpad: https://github.com/nvbn/everpad