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Best 7 Free And Open-Source Instant Messaging Software

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12 Best Instant Messaging Software in 2025

filter to find the best alternatives WhatsApp alternatives are mainly Instant Messengers, but if you’re looking for Encrypted Chat Apps or Group Chat Apps you can filter on that. You can also

Best Free and Open Source Alternatives to Apple Messages

filter to find the best alternatives WhatsApp alternatives are mainly Instant Messengers, but if you’re looking for Encrypted Chat Apps or Group Chat Apps you can filter on that. You can also filter by region, for

Different Types of Open Source Chat Software. Instant Messaging Software: This type of open source chat software allows for real-time, direct messaging between two or more

Pidgin is a free open source work instant messaging software solution, which is compatible with all desktop operating systems. It also works efficiently with multiple chat

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  • Best 7 Free and Open-Source Instant Messaging Software

Although both are open source IM projects, they have completely different application scenarios. Turms is a general instant messaging engine for medium to large scale instant messaging

The best open source alternative to Messages is Signal. If that doesn’t suit you, our users have ranked more than 50 alternatives to Messages and many of them is open

Top Free Essential Messaging Software Gaim. Get a simple, neat and a steady instant messaging platform with Gaim. It is a free and suitable alternative to the famous

Browse free open source Messaging platforms and projects below. Use the toggles on the left to filter open source Messaging platforms by OS, license, language,

Developed by the non-profit Signal Foundation, Signal is a free, multiplatform, and open-source messaging app that uses end-to-end encryption technology to ensure user

Instant Messaging Software: This type of open source chat software allows for real-time, direct messaging between two or more people. It typically comes with the ability to create

The best open source alternative to Messenger is Signal. If that doesn’t suit you, our users have ranked more than 100 alternatives to Messenger and loads of them is open source so hopefully

  • Open Source Instant Messenger & Chat Software
  • Best Instant Messaging Software in 2025
  • Top 7 open source messaging platforms for secure communication
  • Best Open Source Messaging Platforms 2025

Only free and open source software is eligible for inclusion here. Click the links in the table below to learn more about each client. Tox Clients; qTox: Instant messaging, video conferencing with a simple and intuitive

Suggested Read: Best Instant Messaging Software for PC & Mobile that are Alternative to Skype. Discord; Private community channels; Chat access customization; Video

WeChat provides users with free mobile instant messaging, video and voice calls, group chat, and multimedia messaging (images, video, audio, stickers, etc). Up to 500 people

Some teams are looking for higher levels of flexibility and security in their communication tools: thus, they opt for open source messaging platforms. In this blog, we’re going to outline some of

Rocket.Chat – Rocket.Chat is free, unlimited and open source. Replace email, HipChat & Slack with the ultimate team chat software solution. Riot – Communicate the way you want with Riot – a universal secure chat app entirely

14 best instant messaging software of 2024

2. Rocket.Chat. The Custom Instant Messaging Service Built For Teams. Rocket.chat hosted instant messaging service Gated community. Best For: Enterprises and

In this section you’ll find information about XMPP Software, including clients, servers, libraries, and more. An XMPP client is any software or application that enables you to

Open: Free forever and open-source; Berty is designed to be used as a communication tool when all other traditional messengers fail. Berty Messenger serves the following use cases: When

Spark is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong

Matrix, the open protocol for secure decentralised communications. The homepage of the matrix.org website. Chat securely with your family, friends, community, or build great apps with

Compare the best free open source Windows Messaging Platforms at SourceForge. Free, secure and fast Windows Messaging Platforms downloads from the largest

With your help, we can continue to provide a free, secure, and private communication software for all. Your generosity fuels our mission to keep communication private and accessible. Subscribe

Technitium Mesh is a secure, anonymous, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. Primary aim of developing this instant messenger

Top 10 best Enterprise chat software are MirrorFly, ApphiTect, Wire, Mattermost, Zulip, LetsChat, Element, Jitsi, Rocket.chat, and Troop Messenger. Let’s look at some of these

The promise of XMPP was to deliver federated instant messaging: anyone would be able to spin up an IM server capable of exchanging messages with any other XMPP server in the world.

Signal is free and open source software, enabling anyone to verify its security by auditing the code. It’s the only private messenger that uses open source, peer-reviewed cryptographic protocols to keep your messages safe. See More. Top

WhatsApp is not available as a self-hosted solution but there are plenty of alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is

Q-municate is a GDPR-ready & HIPAA-complaint open source instant messenger that supports HD video calling. It’s a complete Whatsapp alternative that is more developer

Mattermost is a free open-source self-hosted multi-user chat platform. It is written in Go and JavaScript (React). It supports 16 languages. It may not differ much from Slack, as it supports team, groups, creating multiple

The best open source alternative to Messages is Signal. If that doesn’t suit you, our users have ranked more than 50 alternatives to Messages and many of them is open source so hopefully you can find a suitable

Chat UI Kit from chatscope is an open source UI toolkit for developing web chat applications. A Tox-based instant messaging and video chat client. Desktop client for Cabal,