Top 20 open-source products relevant to Communication

Boost your team's success with Bitrix24! Seamlessly collaborate, automate tasks, and manage projects in one powerful platform. Unleash productivity, streamline workflows, and achieve your goals with ease. Your all-in-one solution for business growth.

Open Source freemium $49.0 / Monthly (5 users / 24 GB )

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Open Source

Fast, simple & secure messaging. Privacy that fits in your pocket.

Open Source

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.

Open Source free

Work locally, grow globally.

Open Source paid Free Trial $25.0 / Monthly

RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies.

Open Source freemium $19.99 / Monthly (All-in-One Phone, Team Messaging, and Video Conferencing.)

Brings voice and messaging to your web and mobile applications.

Open Source

Matrix is an open standard for decentralized persistent communication over IP.

Open Source

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.

Open Source

Private & Secure Messenger.

Open Source

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

Open Source

Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

Open Source

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Open Source

Digital workplace solution.

Open Source freemium $5.0 (Professional 5$ / user / month)

Franz is your messaging app for WhatsApp, Facebook Messenger, Slack, Gmail, Telegram and many many more.

Open Source freemium €4.0 / Monthly

Engage Your Online Students. BigBlueButton is a web conferencing system designed for online learning.

Open Source

Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.

Open Source

Secure messaging, anywhere.

Open Source

Application and Data, Collaboration, and Web and Video Conferencing.

Open Source

An open source telephony switching and private branch exchange service for Linux.

Open Source