| Field | Networking with Microsoft Windows |
| Went Obsolete | 1995 |
| Made Obsolete By | Windows 95, Windows NT 3.51 |
| Knowledge Assumed | |
| When useful |
Before Microsoft included TCP/IP networking with Windows, various third-party add-ons gave Winsock (“Windows Sockets”, based on the BSD socket API) functionality to Windows 3.x. The most popular implementation was Trumpet Winsock. Users had to install it before using the Internet on Windows. When Windows 95 and Windows NT 3.51 were released, they included an implementation of Winsock built-in, so Trumpet Winsock was no longer necessary.
