TekWiFi is a WiFi connection and diagnostic tool that runs on Windows operating systems. It simplifies connecting to wireless networks that use PEAP authentication. Some key features include listing available wireless networks, displaying connection details, automatically configuring PEAP authentication on the client side, diagnosing connection problems, and changing cipher suite priorities for PEAP/EAP authentication. The software can be run from a downloaded ZIP file without installation and allows configuring connection settings through a GUI.