Expanded list including Blindsense & Tremorsense (note that I may've missed some of the Tremorsense PrCs even for materials I own):
Ardent Dilettante (Planar Hb) -- Blindsight, Level 10
Cerebrex (Dragon 317) -- Blindsense, Level 5; Blindsight, Level 8
Darkrunner (Lords of Madness) -- Tremorsense, Level 4
Darkwater something (it's bad when you can't make sense of your own abbreviations, lol) (Dragon 314) -- a limited version of Blindsense, Level 7 (without looking it up, I'd guess in water only)
Dragon Disciple (DMG) -- Blindsight, Level 5
Earth Dreamer (RoS) -- Tremorsense, Level 3
Earthshaker (Dragon 314) -- Tremorsense, Level 1
Eye of Gruumsh (CW) -- Blindsight, Level 8
Sacred Fist (CD) -- Blindsense, Level 6
Scout base class (CV) -- Blindsight, Level 20
I didn't list Dungeon Delver because it gets limited uses per day, while the others here are 'always on'.
List does not include Faerun-specific books, as I don't own most & haven't entered the couple I do into my Class Features Compendium; also missing for 3.5 is Explorer's Handbook & Dragons 334, 335, & 337.