Session freedom tech 8 decentralizedpermissionlessopen-sourceno accountno phone numberno emailself-custodystrong metadata protectione2eeunique usernameimmutable eventsno PFSpoor tokenomicsno community appsno self-hostingcompliant teamhostile jurisdictiontoken2020
SimpleX freedom tech 8 decentralizedpermissionlessopen-sourceno accountself-hostingno phone numberno emailself-custodyPFSe2eecliflatpakweak metadata protectionno community appscompliant teamhostile jurisdictionmisleading marketingno unique usernamesno token2022
Status freedom tech 6 decentralizedpermissionlessopen-sourceno accountno phone numberself-custodyno emaile2eeunique usernamesimmutable eventsweak metadata protectionpoor tokenomicsbuggyno community appscompliant teamhostile jurisdictionlow throughputbloatedsuper-apptoken
XMPP outdated tech 4 federatedopen-sourceself-hostingcommunity appsoptional e2eeunique usernamesaccount-basedno self-custodyno metadata protectionno token1999
Matrix outdated tech 3 federatedopen-sourceself-hostingcommunity appsoptional e2eeunique usernamesaccount-basedemail addressno self-custodyno metadata protectionmutable eventsno token2014
IRC outdated tech 2 distributedopen-sourceself-hostingcommunity appsunique usernamesaccount-basedno self-custodyno metadata protectionno e2eemutable eventsno token1988
Signal slave tech 2 PFScommunity appse2eeunique usernamescentralizedpermissionedphone numberaccount-basedno self-custodycompliant teamhostile jurisdictionweak metadata protectionno token2014
Telegram slave tech 1 community appsoptional e2eeunique usernamescentralizedpermissionedphone numberaccount-basedno self-custodycompliant teamhostile jurisdictionno metadata protectionno default encryptiontoken2013
Discord slave tech 1 unique usernamescentralizedpermissionedphone numberaccount-basedno self-custodycompliant teamhostile jurisdictionno metadata protectionno default encryption2015