Austin/Travis County
https://public.co.travis.tx.us/sips
Williamson County
http://judicialrecords.wilco.org/JailingSearch.aspx?ID=400
Hays County
http://www.co.hays.tx.us/corrections-bureau-1.aspx
Comal County
http://www.co.comal.tx.us/SO/Corrections_Division.html
How can I find out if my loved one is in jail?
List of resources here.