Texas Comptroller of Public Accounts

The Texas Secretary of State is the official office for registering various business entities in Texas, but I have been told that it is not the best source for quick and free information.  The Texas Comptroller of Public Accounts - Taxable Entity Search has basic business entity information including name, status, location, agent, file number, SOS (Secretary of State) registration date, and taxpayer ID.  You can search by file number, tax ID or entity name.