Lotus Notes Lotus Notes is an email client devoloped by IBM. Latest Lotus Notes versions:Lotus Notes 6.0Lotus Notes 5.0Lotus Notes 4.5Lotus Notes supported platforms:MacPPCWindows NTLotus Notes supported devices:MacintoshWindows DesktopLotus Notes architectures:32-bitLatest user agents:Mozilla/4.0 (compatible; Lotus-Notes/6.0; Macintosh PPC)Lotus-Notes/4.5 ( Windows-NT )Mozilla/4.0 (compatible; Lotus-Notes/5.0; Windows-NT)Mozilla/4.0 (compatible; Lotus-Notes/6.0; Windows-NT)