Alternatives to Vacuum-IM for all platforms with any license

Pidgin

Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in...

Free Open Source Mac Windows Linux BSD PortableApps.com ... Xfce
Support for Multiple protocols Support for Multiple protocols Extensible by Plugins/Extensions IRC ... Plugins Supports XMPP Chat Messaging Multiple languages Multiple Account support Multiple chat protocols Portable Video calling Voice Call Xmpp Add a feature

1474 Like
Jitsi

Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live...

Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet BSD iPad
SIP Video Conferencing Security & Privacy Privacy-friendly ... Browser based Chat Cross-platform Desktop Sharing File sharing Group chat iPhone/iPod sync Live Meeting Support for Multiple protocols Multiple Account support No download No installation required No Login Required OTR Plugins Privacy focused Share your screen SIP Softphone Unlimited users Video calling Video chat Video Conferencing Voice chat WebRTC Xmpp Add a feature

370 Like
Gajim

The goal of Gajim is to provide a full featured and easy to use XMPP client. Gajim works nicely with GNOME, but does not require it to run. It is released under the GNU...

Free Open Source Mac Windows Linux BSD Xfce
Decentralized Chat Encrypted chat Group chat ... Multiple languages OMEMO OTR Supports XMPP Tabbed interface Video calling Xmpp Add a feature

57 Like
Empathy

Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You can tell it about your accounts on all those...
- Discontinued
  Empathy is currently unmaintained. Last version, 3.25, released in August 2017, can be still downloaded from the official website.
Free Open Source Linux BSD
Chat Integrated File Sharing Support for Multiple protocols SIP ... Video calling Video chat Voice chat Xmpp Add a feature

153 Like
YakYak

What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete conversation * Notifications * ...

Free Open Source Mac Windows Linux Hangouts
Portable Add a feature

20 Like
Beagle IM

BeagleIM is a lightweight and powerful XMPP client developed by Tigase, Inc. It provides an easy way to start using the XMPP Protocol (formerly known as Jabber) if...

Free Open Source Mac
Messaging Video calling Video chat Xmpp Add a feature

1 Like
Jabiru

Jabber client for Android.
- Discontinued
  The app has been discontinued. Last version, 2.2.2.1, released in May 2013, can be still downloaded from Google Play Store.
Free Android
Xmpp Add a feature

5 Like
Caya

Caya is a multiprotocol Instant Messaging client for Haiku. Right now it support: - Google Talk - Jabber - Facebook - MSN Messenger - AOL Instant...

Free Open Source Haiku
No features added Add a feature

2 Like
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Centericq

Centericq is a text mode menu- and window-driven IM interface that supports the ICQ2000, Yahoo!, AIM, IRC, MSN, Gadu-Gadu and Jabber protocols.
- Discontinued
  The program is no longer updated. Last version, 4.21.0, released in September 2005, can be still downloaded from the official website.
Free Open Source Mac Windows Linux BSD
Built-in RSS reader Text-based Add a feature

1 Like
Walkie

Walkie is a better way to communicate for distributed teams that don't want to spend all day in dry text channels. Voice Only A voice only communication tool...

Free Mac
Chat Group chat Group Voice Chat Integrated Chat ... Live Chat Push to talk Video chat Voice chat Add a feature

1 Like