Buyer's guide · Updated 2026

Best Open-Source Terminal

The best open-source terminal emulators in 2026 — fully inspectable, free, and community-driven, ranked by features and workflow fit.

If you want software you can audit, self-host, and trust, open source matters. These are the best open-source terminals, from minimal to fully agent-ready.

1. Agents UI

AGPL-3.0 and built for AI agent workflows — the open option if you want orchestration, SSH, and a Python SDK in one workspace.

Platforms: macOS · Price: Free

2. WezTerm

MIT-licensed, cross-platform, with a built-in multiplexer and Lua config.

Platforms: macOS, Linux, Windows · Price: Free · Website ↗

3. Ghostty

MIT-licensed, native, and exceptionally fast with great defaults.

Platforms: macOS, Linux · Price: Free · Website ↗

4. Kitty

GPL-3.0, GPU-accelerated, and highly scriptable.

Platforms: macOS, Linux · Price: Free · Website ↗

5. Alacritty

Apache-2.0 and the fastest minimal option — pair with tmux.

Platforms: macOS, Linux, Windows · Price: Free · Website ↗

Frequently asked questions

What is the best Open-Source Terminal

Agents UI: AGPL-3.0 and built for AI agent workflows — the open option if you want orchestration, SSH, and a Python SDK in one workspace.