~4800 stars; complements signald; Unofficial CLI built on official libsignal-client; registers/links a real Signal account.
Yes, signal-cli is open source under the GPL-3.0 license.
signal-cli is free to use.
Yes, signal-cli can be self-hosted (the source is available under the GPL-3.0 license).
~4800 stars; complements signald; Unofficial CLI built on official libsignal-client; registers/links a real Signal account. Widely relied-upon de-facto standard for server notifications -> finalist despite unofficial. platform-tos flagged (unsanctioned client; number could be limited). Auth via phone registration/link.