About Slack
Slack is the leading business communication platform that redefined workplace messaging. Founded in 2013 by Stewart Butterfield (co-founder of Flickr), it was born out of the ashes of failed video game company Glitch. The platform pioneered channel-based messaging, and its extensive app directory (2,600+ integrations) made it the central hub for workplace tools. Acquired by Salesforce in 2021 for $27.7 billion, it remains the standard for team communication in tech and increasingly in enterprises globally.
Performance Ratings
Features & Functionality90/100
Ease of Use92/100
Integrations98/100
Pricing & Value70/100
Customer Support78/100
Scalability88/100
Security & Compliance88/100
Pros & Cons
Pros
- Best-in-class integration ecosystem (2,600+ apps)
- Excellent search across messages and files
- Great mobile and desktop apps
- Huddles for quick audio/video calls
- Workflow Builder for no-code automation
- Slack Connect for external partners
Cons
- Can become overwhelming and noisy
- Expensive at scale ($15/user/mo for Business+)
- 90-day message history limit on free tier
- Contributing to 'always-on' work culture
- Overkill for simple team needs
Best For
Remote and distributed teamsTech companies and startupsCross-functional collaborationIntegration-heavy workflows (DevOps, marketing)Real-time communication and quick decisions
Popular Products
Slack Connect
External Collaboration
4.4
Slack Huddles
Audio/Video Calls
4.3
Workflow Builder
No-Code Automation
4.2
Slack AI
AI Assistant
4.1
Real-Time Data & Updates
Top Discussions
PricingFeaturesSupportAlternativesIntegration
Last updated: 2026-12-10
Company Info
- Founded
- 2013
- Headquarters
- San Francisco, CA, USA
- Employees
- 3,500+
- Revenue
- $1.5B+
