Echoing the Spheres/Dreamscarred trains, but beyond that and homebrew from this forum, I'm fond of Alluria Publishing's 3pp races--especially the Entobian, Taddol, and Squole. The latter has become something of a favorite at my table, even if I'm likely never going to run the Entobian--while its concept of "larva that chooses-via-feats what insect it becomes" is cool, level-gating it means that it's not a good fit for every table.