Libro's Extended Homebrew Signature
Spoiler: Recommended homebrew by other people
Zaydos's homebrew signature &Jormengand's homebrew signature
Both sources of great work by two great homebrewers.
T.G. Oskar's homebrew signature
I'd recommend his retooled classes over many of the WOTC versions.
Recommended for Zerg fans:
Liz Lorn's Swarmlord
Other fun stuff:
Jiriku's Remixed Monk
May need to drop skill points by two points, but otherwise a great take on the monk that sticks close to the PH version.
MrNobody's APFs (Alternate Prestige Features)
Add something new to your DMG PRC today!
Vaynor's miniature golems
Fun low-power golems
Drow: Have a drow, they're LA-free.
The Taldar: A construct race based upon Protoss Purifiers from Starcraft 2 Legacy of the Void. At some point I need to compose a better version of the entry with its own thread.
Lizardfolk:LA+0 racial statistics, a couple of feats, and Racial Substitution levels for lizardfolk Scouts (2nd place!)
Soul of the Sea: Aquatic-themed class abilities for the Favored Soul.
Telyn, made from Mind and Magic. (Vestige)
LA +2 Drider. Playable alongside standard drow without HD making a mess of things.
Fiendish thingy with natural weapons. I may rework/retype this at some point as a more functional race. Feral Fiendling will likely be the name.
Works in progress:
I am/inspired a Vestige.
...make that two.
My Extended Signature