Powerful replacement for macOS Terminal, supporting 24-bit color and iTerm2 color schemes. Written by Kevin Grant.
Free Download of Version 4.1 (BETA)
— for macOS / OS X 10.10+ (Yosemite, El Capitán, Sierra), ~4 MB
To run on OS X 10.3.9+, download the older 4.0.0 release.
See also the original telnet client for Mac Classic.