Brick.im[1] hosts free fonts on Fastly's CDN. Fonts are directly converted from their sources to .woff only; doesn't support other font formats. No subsetting means the fonts can be very large, especially those with full OpenType features.
Most of the fonts are of the latest version though. Fonts not included in Google Fonts, like Linux Libertine/Biolinum, Aileron, and Heuristica are included.
If you don't mind the performance hit, you can use it.
Firefox 47.0.1 on W7 x64