WP Plugin Directory - A smarter way to find WordPress plugins
GPLDL - 1066 GPL-licensed WordPress themes & plugins for free
Stencil for WordPress - With Stencil for WordPress, you can design images as you write posts without ever leaving the page!
LyrWP - WordPress themes / plugins / services curated.
IncludeWP - Top open-source frameworks for WordPress plugin & theme devs
Blocksy - A lightningfast, innovative and supercharged WordPress theme