Texas Comptroller of Public Accounts http://comptroller.texas.gov/procurement/
Electronic State Business Dailyhttp://esbd.cpa.state.tx.us/
Centralized Master Bidders List https://mycpa.cpa.state.tx.us/tpasscmblsearch/index.jsp
Department of Information Resources https://dir.texas.gov/
TXMAS http://comptroller.texas.gov/procurement/prog/txmas/
E & I Cooperative Services https://www.eandi.org/Default.aspx
US Communities http://www.uscommunities.org/
Buy Board Purchasing Cooperative https://www.buyboard.com/
Choice Partners http://www.choicepartners.org/