📡 Communication

A messaging app for teams who see through the Earth!

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

Open Source

Tomba is the leading solution to find and verify professional email addresses. Start using Tomba and connect with the people that matter for your business.

Try for free Open Source freemium $39.0 / Monthly (Enterprise $389.00/mo Searches 25k Verifications 60k Teams 20)

Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.

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

Open Source

WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

free

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

Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.

freemium $15.99 / Monthly (Pro - Great for Small Teams)

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

Open Source

Brings voice and messaging to your web and mobile applications.

Open Source

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.)

Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs

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

Switch is a cloud-based phone system built for Google Apps users.