Ipswitch
Ipswitch, Inc. was founded in 1991 and developed a family of TCP/IP products for a range of PC platforms:
- Acadia/VxD for Windows
- Piper/IP for DOS and Windows
- Vantage/IP for OS/2
- Catipult Netware to TCP/IP gateway
- WS_FTP Pro (1994)
- IMail electronic mail for Windows
- INews network news for Windows