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Messenger & Conferences

Messenger with encryption

XMPP/Jabber

The following apps support the XMPP protocol, originally known as Jabber. This is one of the oldest protocols in the instant-messaging world, but still very fresh and constantly being improved.

• Snikket (5@67) Ǥ 33 LastUpdate: 2024-04-12 Github; XMPP client forked from Conversations
• Quicksy (4.5@162) Ǥ 36 Github; Vorstellung 11/2018; fork of Conversations using your phone number as ID
• Conversations (Jabber / XMPP) (4@2,461; ~EUR 5.00) Ǥ 37 / Share Location Plugin (4.6@96) Ǥ 6 LastUpdate: 2017-12-28 Github; XMPP/Jabber; PGP/OTR/OMEMO; Wikipedia DE | EN; Vorstellung & Schnelleinstieg 5/2016; Anleitung für Anfänger 7/2018; ausführliche Vorstellung 9/2020; can act as UnifiedPush distributor
• aTalk (Jabber / XMPP) (3.6@136) 27 Github
• Xabber (3.5@12,329) Ǥ 10 LastUpdate: 2019-11-27 Github
• Stork IM (2.8@61) Ǥ 18 LastUpdate: 2023-06-01 Github
• Prav (0@0) Ǥ 36 Codeberg; Quicksy like fork of Conversations
• Cheogram (0@0) 37 fork of Conversations
• monocles chat (0@0) 37 Codeberg
• monocles social (0@0) 4 LastUpdate: 2022-07-17 Codeberg; based on movim
• another.im (0@0) 32 Fork of Conversations
• Moxxy (0@0) 14 LastUpdate: 2023-09-08 Codeberg

Matrix/riot/Element

These are clients for the Matrix protocol. Don't mind the triple naming – it seems they like to rename the project a lot

• SchildiChat Legacy (4.5@272) Ǥ 29 2 / SchildiChat Next (3.8@41) 19 Github; Review 10/2020 / Github
• FluffyChat (4.4@565) Ǥ 26 GitLab; also available via its own F-Droid repo; supports UnifiedPush
• Syphon (4.2@86) 10 LastUpdate: 2022-10-25 Github; Matrix
• Librem Chat (3.5@70) Ǥ 31 LastUpdate: 2020-04-11 fork of Riot.im
• BundesMessenger (3.4@49) Ǥ 12 1 / BwMessenger (4.4@1,239) Ǥ 12 1
• Element Classic (3.1@7,184) Ǥ 29 2 / Element X - Secure Chat & Call (3@758) Ǥ 20 1 Github; Video Anleitung 3/2021; Wikipedia DE | EN / Github
• SmallTalk (0@0) 5 1 LastUpdate: 2023-01-08 Github; minimal Matrix client
• < polycule > (0@0) 10 GitLab
• NI2CE Messenger (0@0) Ǥ 19 2
• Faraday (0@0) 29 3 Github

Nostr

Self-description: „Nostr is an open protocol that is able to create a censorship-resistant global "social" network, transferring notes and other stuff using relays. It doesn't rely on any trusted central server, hence it is resilient; it is based on cryptographic keys and signatures, so it is tamperproof; it does not rely on P2P techniques, therefore it works.“

• Amethyst (4.6@955) Ǥ 15 Github; client for Nostr
• Primal (4.4@207) Ǥ 13 Github
• Nozzle (0@0) 2 LastUpdate: 2024-02-28 Github
• Nostros (0@0) 9 1 LastUpdate: 2024-03-12 Github

Miscellaneous encrypted messenger

• Signal Private Messenger (4.6@2,789,954) Ǥ 50 Vorstellung 8/2018-3/2024 | Video-Vorstellung 1/2020; ausführlicher Test 12/2020; "Crypto-SMS" und verschlüsselte Telefonie (ehemals TextSecure + RedPhone)
• Watomatic (4.6@896) 7 Github; Vorstellung 2/2021 | 3/2021; Intro 2/2021; leaving WhatsApp? Tell where you've gone to with this auto-responder!
• Rocket.Chat (4.5@15,500) Ǥ 19 3 Github; chat with screen and file sharing, and more
• Session - Anonymous Messenger (4.5@13,587) Ǥ 28 / Session F-Droid (0@0) 30 Github / Github
• Delta Chat (4.5@2) 24 / Delta Chat (4.2@2,187) Ǥ 25 Github; ausführlicher Testbericht 7/2020 / Vorstellung 6/2019 | 2/2020 | 4/2020; Wikipedia DE
• surespot encrypted messenger (4.3@4,210) Ǥ 10 3 LastUpdate: 2019-04-30 Github; Wikipedia DE|EN; send encrypted messages. unlock voice messages per in-app payment. AES end-to-end encryption.
• Telegram (4.2@16,361,963) Ǥ 50 Github; Testbericht 3/2020; Vorstellung 8/2018-1/2021; Security Analysis 5/2017; Video Erklärung 7/2019; Wikipedia DE|EN; encryption and self-destruct timer
• SimpleX Chat (4.2@1,809) 17 Github; Vorstellung 11/2022; Test 12/2022
• Threema. The Secure Messenger (4.1@74,735; ~EUR 6.50) Ǥ 26 / Threema Work. For Companies (3.6@2,062) Ǥ 38 / Threema Libre (0@0) 38 Github; Video Review 3/2019 (DE); Video Backup & Restore (3/2019); Video Threema Webchat Howto 2/2017 (DE); Threema Video Tutorials; Vorstellung 8/2018 | 11/2018-1/2021; Wikipedia DE|EN; Audit 11/2015 | 3/2019; (Datenschutz-) Testbericht 2/2020 ; FAQ; Libre (FOSS) version available via Threema’s own F-Droid repo; messenger with end-to-end encryption / Github
• Hoop Messenger (4.1@5,165) Ǥ 34 3 LastUpdate: 2021-09-24 Intro 4/2020
• Briar (4@3,828) 22 Video Intro 7/2017; Video Review 7/2018 | 9/2020; Vorstellung 9/2018-11/2023 | 10/2019 | 4/2020; Wikipedia DE | EN; FreieMessenger; ausführliche Besprechung 11/2020
• Anonymous Messenger (3.9@241) 11 peer-to-peer, works over TOR
• aTox (3.7@515) 9 Github
• Jami (3.6@2,189) Ǥ 26 Wikipedia EN; FAQ; Vorstellung 12/2019 | 5/2020; Testbericht 3/2020; Review 1/2021; desktop clients for Linux, Mac, Windows
• ginlo Private Messenger (3.6@630) Ǥ 24 3 LastUpdate: 2024-04-17 Vorstellung 9/2018-7/2020
• Kontalk Messenger (3.6@614) 32 LastUpdate: 2020-07-12 Github; Vorstellung 8/2018
• Wickr Me – Private Messenger (3.4@89,604) Ǥ 25 3 LastUpdate: 2023-11-03 Review 9/2022; Wikipedia EN; end-to-end encryption with mission-impossible-flair (self-destructing messages)
• Nextcloud Talk (3.2@1,736) Ǥ 39 Github
• Chiffry Secure Messenger (3.1@859) Ǥ 26 1
• TigerConnect (3@5,420) Ǥ 35 3
• TRIfA (2.9@131) 19 Github; Tox client
• Wire - Secure Messenger (2.3@36,610) Ǥ 24 Github; Testberichte 4/2017 | 3/2020; Privacy-Warnung 7/2018; Vorstellung 8/2018 - 4/2020; free/gratis, encrypted communication: voice, video and group chats; cross platform: Android, iOS, Mac, Windows. Or in the web browser.
• ArcaneChat (0@0) 23 Github; Delta Chat client
• Mercurygram (0@0) 50 Github; Telegram cllient
• Dib2Qm (0@0) 10 GitLab; based on IMAP and QuickMSG (no centralized server)

Video and Audio Conferences

• Mumla — Mumble VoIP (4@820) 14 GitLab; audio calls/conferences; client for Mumble (Wikipedia DE | EN)
• Jitsi Meet (3.6@52,582) Ǥ 18 Github; Anleitung 3/2020; Video Kurzanleitung 3/2020; Vorstellung 4/2020
• Jami (3.6@2,189) Ǥ 26 Wikipedia EN; FAQ; Vorstellung 12/2019 | 5/2020; Testbericht 3/2020; Review 1/2021; desktop clients for Linux, Mac, Windows
• Infomaniak kMeet (3.4@212) Ǥ 16 3 Github
• Nextcloud Talk (3.2@1,736) Ǥ 39 Github
• Wire - Secure Messenger (2.3@36,610) Ǥ 24 Github; Testberichte 4/2017 | 3/2020; Privacy-Warnung 7/2018; Vorstellung 8/2018 - 4/2020; free/gratis, encrypted communication: voice, video and group chats; cross platform: Android, iOS, Mac, Windows. Or in the web browser.