Team communication software enables workplace collaboration—instant messaging, video calls, file sharing, and async communication. These tools replaced email as the primary way teams work together, especially since remote work became standard.
Slack revolutionized workplace communication with channels, integrations, and a less formal tone than email. Microsoft Teams bundled similar features with Office 365 and now rivals Slack in usage. Beyond these giants, specialized tools serve specific needs—Discord for community, Loom for async video, Notion for documented communication.
The best communication tools reduce noise while ensuring important messages get through. They integrate with your other tools, support both sync and async communication, and have mobile apps that don't feel like afterthoughts.