Slack

General Description: Slack is a communication platform designed for teams to collaborate through messaging, file sharing, and integrations. It replaces traditional email with real-time, organized channels, making team communication more efficient.

Key Features:

1. Team communication with topic-based channels
2. File sharing and searchable message history
3. Video and voice call capabilities
4. Integration with over 2,000 apps like Asana, Trello, and Google Drive

Cost: Slack offers a free plan with limited features. Paid plans start at $7.25 per user per month, offering expanded message history and integrations.