Messenger & Conferences
Messenger with encryption
2025-12-03
XMPP/Jabber
2025-11-29
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
2025-12-04
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
2025-11-22
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
2025-11-30
- 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
2025-11-29
- 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.
Further Readings:
- Mike’s Empfehlungs-Ecke: Messenger
- Mike’s Messenger-Matrix
- Messenger-Matrix der Piratenpartei
- Hinweise zu Anbietern von Videokonferenzdiensten (PDF des Berliner BfDI)
- Nostr: Eine Alternative zu Twitter – und Mastodon (3/2023)
- The 8 Best Free Messaging Apps for Android (9/2022)
- 5 best messaging apps with end-to-end encryption to try in 2022 (6/2022)
- Diese sicheren Messenger empfiehlt das FBI (12/2021)
- What was that with E2EE? FBI Document Says the Feds Can Get Your WhatsApp Data — in Real Time (11/2021)
- Messenger-Apps auf dem Smartphone – Digitaler Schutzschild Teil6 (6/2021)
- Datenschutzfreundliche und sichere WhatsApp-Alternativen (5/2021)
- Messenger: Unterschied zwischen Push und Polling (2/2021)
- Homeoffice? Beliebte Dienste und Geheimtipps für Video-Chat (4/2020)
- Vorstellung verschiedener Messenger: Warum Signal Messenger eine super Alternative zu WhatsApp ist (3/2020)
- Die verrückte Welt der Messenger: Teil1 (1/2020) | Teil2 (2/2020)
- Verschlüsselte Messenger: Threema, Signal, Telegram, WhatsApp (11-2015 - 1/2021)
- Wire, Hoccer, Kontalk (3/2017)
2025-12-04



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