iTerm2 is a replacement for the macOS Terminal app and the successor to iTerm. It's for anyone who spends a lot of time on the command line and wants more features than the built-in Terminal offers.

Key features:

Replace Terminal with an app that adds many small features for daily terminal work.
Read the source code on GitHub, since iTerm2 is free software licensed under GPL v2.
Learn it from the FAQ and documentation, and report bugs or ideas in the bug tracker or forum.

Requires macOS 10.14 or later. iTerm2 is free.