.NET Framework
The older, Windows-only .NET, now in maintenance only.
The .NET Framework (versions 1.0–4.8.x) is the original Windows-only implementation of .NET; it is supported but receives no new features, and new work targets modern .NET.
Examples
An old project file with
<TargetFrameworkVersion>v4.8</TargetFrameworkVersion>targets .NET Framework 4.8.
See also