Slack

Overview

Slack is a core team communication hub used by organizations worldwide. It replaces internal email with organized, topic-based channels and supports thousands of integrations with other productivity tools, reducing inbox clutter and accelerating team responses.

Key Features

• Chat channels — Organized conversations by topic, project, or team
• Direct messages — Private one-on-one and group conversations
• File sharing — Share documents, images, and files directly in conversations
• Integrations — 2,600+ app integrations including project management, time tracking, and CI/CD tools
• Workflow builder — No-code automation for routine tasks and notifications
• Threaded conversations — Keep discussions organized within channel threads
• Huddles — Lightweight audio and video conversations for quick syncs
• Search and archives — Full-text search across all messages and files
• Cross-platform — Desktop, web, iOS, and Android support with real-time sync

Ideal For

• Internal team communication and collaboration
• Replacing email for day-to-day workplace communication
• Connecting distributed and hybrid teams

Pricing

Free tier with limited message history and app integrations. Paid Pro and Business+ plans start from approximately $7.25/user/month with additional features including unlimited history, advanced compliance, and enterprise support.