Organizations
Texas Cave Management Association (TCMA)
Texas Caves Conservancy (TCC)
Bat Conservation International (BCI)
Texas Speleological Association (TSA)
Texas Speleological Survey (TSS)

Grottos
Maverick Grotto (Fort Worth and Tarrant County)
Underground Texas Grotto
Greater Houston Grotto
Dallas Fort Worth Grotto
Bexar Grotto

News and Message Boards
Worldwide Caving News Network

Misc.
Cave Critters
Guidebook of the Geology of Travis County
Caving Technology Website
The Frog Ascending System: A Detailed Description
U.S. Cavers Forum
Auriga, cave survey freeware
Caves: A Window Into The Edwards Aquifer