Public demo contains results from previous and ongoing NSF, ARPA, NASA funded projects. Selected statistical, neural network, genetic algorithm, and automatic indexing algorithms were adopted for textual knowledge discovery and semantic retrieval. The systems were developed mostly in CGI/HTML and are available for public access. The demo intends to show the robustness and scalability of our TKD techniques, including: BioQuest (molecular biology, 20 MBs), CSQuest (computer science, 1 GB), ET-Map (Web pages, 1 GB), GS-Map (electronic meeting, 10 MBs), Internet Spider (Web pages, dynamic).