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/