Apps similar to Gajim include Pidgin, which is free and open source. Other options are Conversations, Trillian, Adium and Psi XMPP Client. Instant Messengers like Gajim are a crowded field, with more than 50 alternatives for Mac, Linux, Windows, Android and iPhone.
all-in-one Communication and Collaboration Platform. The NYNJA platform combines the benefits of instant chat, video conferencing, screen sharing, file sharing, asset management collaboration, and much more, in one fast, easy and reliable platform.
United States
Monal is an open source iOS and macOS XMPP Chat-Client. It can connect to any standard XMPP chat server such as Gtalk or Facebook chat.
United States
Lightweight and powerful XMPP client for iPhone and iPad, with audio and video calls and built-in privacy
Instantbird is an instant messaging client based on Mozilla XULRunner and the open source library libpurple created by the software developers of Pidgin . Over 250 add-ons allow user customization of, and addition of, features.
France
EU
Messenger for Desktop is a wrapper for the official client messenger.com. Therefore it works like a regular browser which can only navigate to the messenger.com web app. MFD doesn't touch your messages, account or personal data. All that is handled securely by Facebook.
RomaniaEU
Graph Messenger is an UNOFFICIAL messaging app that uses Telegram's API and add new features like real multi account system, download manager and time line.
MCabber is a small XMPP (Jabber) console client. It includes features such as SASL/SSL/TLS support, MUC (Multi-User Chat) support, history logging, command completion, OpenPGP encryption, OTR (Off-the-Record Messaging) support, dynamic modules and external action triggers.
FranceEU
A simple-to-use messaging app for 1:1 communication and small groups supporting SMS, MMS, matrix and XMPP through libpurple.
United States
nospeak is a decentralized Nostr chat client for secure, private messaging. It is easy to use but has state of the art end-to-end encryption without metadata leakage.
GermanyEU
Fire is a multi-protocol instant messenger client for Mac OS X based on freely available libraries for each service. Currently Fire handles AOL Instant Messenger®, ICQ®, MSN® Messenger, Jabber, limited IRC, Yahoo!®, and Apple Bonjour communications.
GermanyEU
