Here are six alternatives to Microsoft Teams worth considering:

1. Slack

Slack is a leading chat-based collaboration tool. It can be used to allow team members to communicate in channels, send direct messages, integrate apps, and search past conversations

2. Spike

Spike is a cost-effective alternative to Teams. It allows team members to collaborate via chat, audio calls, and video conferences. It offers features like screen sharing, calendaring, task lists, note taking, and file storage/sharing.

3. Zoom

Zoom is a reliable alternative to teams. It offers chat and collaboration features, high-quality video, and reliability, which has made it popular during the pandemic as a way to stay connected visually when teams cannot meet in person.

4. Rainbow

Rainbow is another alternative to Teams; it integrates team messaging, file sharing, screen sharing, video calls, and task management into one platform. It optimizes team communication and productivity.

5. Chanty

Chanty offers team chat, video conferencing, task management, and integration with business apps. It's designed to be an all-in-one collaboration platform for small to midsize businesses, serving as a viable alternative to Teams.

6. Miro

Miro is an online collaborative whiteboarding platform with infinite canvases for visual collaboration. Teams can brainstorm ideas, map out workflows, sketch diagrams, share sticky notes, and increase productivity during meetings.