Slack Alternatives

With a bunch of meetings, send and receive messages, photos and more, and also you get free video and voice calls, SMS / MMS-app. Features:Free,Windows,Web,Android,iPhone,Chrome,OS

Free secure allinone for player, audio -, video-and text-chat, and is both desktop and phone. Features:Freemium,Mac,Windows,Linux,Web,Android

Basecamp for file sharing and feedback that enables groups of people to reach, appointments, and tasks, is a web-based project collaboration tool. Features:Commercial,Mac,Windows,Web,Android,iPhone

Tel mobile phones, tablets, and Desktops secure and private a precursor. Crystal clear voice and video calls, private group chats, file sharing, voice and video messages Features:Free,Personal,Open,Source,Mac,Windows,Linux,Web,Android

The winning teams and get the job done at the same time, the communication and instant messaging for businesses. It works, so I know where victorious talk Features:Freemium,Mac,Windows,Web,Android,iPhone

Old-stock riot on the web, iOS and Android is an application that runs on open source that can work. Chat rooms, public and private, is about to be built, and the message contains Features:Free,Open,Source,Mac,Windows,Linux,Web,Android

Rocket.Chat web chat, server, advanced JavaScript, full-stack framework Meteor. Features:Free,Open,Source,Mac,Windows,Linux,Android,iPhone

HipChat is an instant messaging service for companies and teams. There is a permanent chat rooms, to offers strong protection-on-one chat, searchable chat history, file sharing via Drag Features:Freemium,Mac,Windows,Linux,Web,Android

To Abundance no matter, most of the open-source, self-hosted alternative. Private messages as a SaaS alternative thing most brings Features:Freemium,Open,Source,Mac,Windows,Linux,Android,iPhone

Zulip chat group application. Posts with the topic of gear, long runs, is the most obvious feature that helps you organize meetings. Features:Free,Open,Source,Mac,Windows,Linux,Web,Android

IP is an open standard for decentralized Modal Dialog over a network Matrix. Decentralized groups, chat, WebRTC-signal, the Internet of things can be used to transfer data, Features:Free,Open,Source,Mac,Windows,Linux,Web,Android

Keybase is a security app for new and free mobile phones and computers. For the geeks among US: Open-Source, Public-Key encryption is also supported. Keybase Features:Free,Open,Source,Mac,Windows,Linux,Web,Android

Glitter is a tool for developer and user chat and collaboration. To speak a place for developers. Key features Unlimited free public chat rooms Features:Free,Open,Source,Mac,Windows,Linux,Web,Android

The master on the basis of the General objectives of the communication, coordination and team work in the improvement of society through a start-up company that aims to improve the speed. Features:Free,Mac,Windows,Web,Android,iPhone