~251 stars; complements matrix-nio; Matrix framework powering the mautrix bridges (and maubot).
Yes, mautrix-python is open source under the MPL-2.0 license.
mautrix-python is free to use.
Yes, mautrix-python can be self-hosted (the source is available under the MPL-2.0 license).
~251 stars; complements matrix-nio; Matrix framework powering the mautrix bridges (and maubot). Open protocol; appservice auth via registration token. No ToS risk on Matrix side (individual bridges to WhatsApp/Telegram carry those platforms' ToS).