toot brings Mastodon to the terminal — a GPL-3.0 CLI and TUI for posting, reading and OAuth2 login against any instance.
Yes, toot is open source under the GPL-3.0 license.
toot is free to use.
Yes, toot can be self-hosted (the source is available under the GPL-3.0 license).
~1323 stars; complements Mastodon.py; OAuth2 login against open Mastodon API; CLI + TUI. Open protocol — no ban/ToS risk. GPL-3.0 copyleft (matters if embedding/redistributing, not for CLI use).