With the advent of Z39.50:1992, the termination of support for free WAIS by Thinking Machines and the establishment of WAIS Inc as a commercial venture, the U.S. National Science Foundation funded the Clearinghouse for Networked Information Discovery and Retrieval (CNIDR) to promote Internet search and discovery systems, open source and standards. CNIDR created a new, free open-source WAIS. This was the first freeWAIS based on the wais-8-b5 codebase of TMC, with a wholly new software suite Isite based upon Z39.50:1992 using Isearch as its full-text search engine.