Microsoft Teams is described as 'Integrates seamlessly with Office 365 to centralize chat, files, and tools. Supports HD audio and video meetings, available across multiple platforms' and is a popular Group Chat app in the office & productivity category. There are more than 100 alternatives to Microsoft Teams for a variety of platforms, including Web-based, iPhone, Android, Windows and Mac apps. The best Microsoft Teams alternative is Element. It's not free, so if you're looking for a free alternative, you could try Element or Zulip. Other great apps like Microsoft Teams are Slack, Wire, Jami and Proton Meet.
Spreed is the worldwide unified web conferencing service offering integrated web and telephone conferencing. It is based on Flash Player. Free service includes 3 attendees and max 1.5h meetings. Single events or monthly service can be purchased.
Germany
EU
The core of your corporate communications, based on the advanced architecture, with support for UltraHD video conferencing, built-in messenger and a free version for 1,000 users.
United States
Kahla is a free and open-source, cross-platform business messaging tool that supports end-to-end encrypted message communication and automatic destruction of messages.
Beekeeper is an award-winning digital workplace app that connects dispersed workforces, combining operational systems and internal communication channels within one secure, intuitive employee portal.
Switzerland
Fleep is a messenger for your teams and projects. It enables communication within and across organizations - be it your team chats, project communication or 1:1 conversations.
EstoniaEU
Sylk Suite allows the creation and delivery of rich multimedia applications accessed by SIP Clients, XMPP endpoints and WebRTC applications.
NetherlandsEU
alfaview is an in-sync high-tech video conference solution that enables you to hold online meetings across the world with live video transmission.
GermanyEU
WorkChat streamlines collaboration for businesses. Connect seamlessly with team and clients, integrating WhatsApp, Skype, and Messenger to manage cross-channel messaging.
Rivers is a free communication and collaboration app that lets you have more organized and focused conversations. Whether you are a part of a company or friend group i.e. community, you will organize your conversations around topics. Create your cube.
India
Engagechats is most impressive an enterprise business/team chat software for effective business communication across multiple devices with advanced chat application technologies.
Switchboard is a collaborative web-based space for teams to work side by side in the apps they already use. It recreates the feeling of being together in a room: more collaboration, spontaneity, and engagement than any single tool that exists.
