Drilldown: tool
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Client and Matrix server software (Synapse/Dendrite/Conduit) are free and open source;
self-host at only your hosting cost, use the free matrix.org homeserver, or buy Element's
hosted plans. (1) ·
Free, no ads, no paid tiers. Run by the Signal Foundation, a US 501(c)(3) nonprofit
funded by grants and donations; by charter it cannot be acquired. (1)
source license:
description:
End-to-end encrypted 1:1 and group messaging, plus voice/video calls, built on
the audited Signal Protocol (Double Ratchet + X3DH). ~40M monthly users. Registration
requires a phone number; usernames (added 2024) let you start chats without sharing it. (1) ·
End-to-end encrypted chat on the Matrix open standard. Anyone can run a homeserver
and servers federate like email; Element is the reference client. 115M+ addressable accounts,
with bridges to Signal, Telegram, WhatsApp and others. (1)
usage notes:
rejected alternatives:
Relying on the public matrix.org homeserver reintroduces an
operator/jurisdiction -- self-host to get the benefit. Discord and Slack are centralized and
not end-to-end encrypted. (1) ·
WhatsApp (uses the Signal protocol but is Meta-owned and harvests
metadata) and Telegram (chats are not end-to-end encrypted by default, weaker crypto). (1)
category:
Showing below up to 2 results in range #1 to #2.