Best Business Instant Messaging - Enterprise Software in 2026

Teams suits people who need chat, meetings, calls, and screen sharing across desktop, mobile, and web.

Slack suits teams that need channel-based communication, guest access and integrations across desktop, mobile and web.

It suits people and organizations that want messaging across devices alongside Google Workspace apps and integrations.

Pumble

Pumble may suit teams looking for channels, direct and group messaging, and meetings in one workspace.

Zulip

Zulip suits teams that want channel-based chat with guest access across desktop, mobile, or web.

Wire

Wire suits organizations seeking encrypted communications, including those needing private-cloud or on-premises deployment.

Teamwire

It suits organizations coordinating mobile teams, routine work, or critical operations, including public safety, healthcare, government, and critical infrastructure users.

Threema

Threema may suit people seeking messaging without providing a phone number or email address, as well as organizations needing messaging integrations and administration tools.

It suits business teams and partners who want chat, file sharing, search, and voice calling connected to a VoIP phone system.

Flock

Flock suits teams that need channel-based collaboration across desktop, mobile, web, and browser-extension platforms.