Outline
Reviewed by Alexis Morain · Updated May 18, 2026
Outline structures internal team documentation with Slack integration and built-in AI. Free 30-day trial available now! Perfect for collaboration.
A solid choice for teams seeking a collaborative knowledge base with Slack integration.
- Direct AI search within documents
- Native Slack integration
- No permanent free plan, only 30-day trial
Outline is a modern knowledge base designed to organize team internal documentation. Features like real-time editing, Slack integration, and AI-assisted search enhance collaboration and information access. Available in cloud or self-hosted versions, Outline offers full customization with custom domains and dark mode.
Pros & Cons
- Direct AI search within documents
- Native Slack integration
- Supports 20 languages, including French
- Dark mode for visual comfort
- Open source and self-hosting possible
- No permanent free plan, only 30-day trial
- Default hosting in the US
- Dependence on Slack ecosystem for some functions
Key features of Outline
Real-time Editing
Collaborate in real-time with comments and threads.
Powerful Search
Instant search and AI answers within documents.
Public/Private Sharing
Share documents with a public or private link.
Slack Integration
Search and share documents directly from Slack.
Brand Customization
Use your brand's colors and logos.
Self-hosting
Option to host on your own server.
Who is Outline for?
Best for
- Tech teams with complex documentation
- SMEs using Slack for communication
- Multilingual organizations
Not recommended for
- Companies requiring a Salesforce connector
Frequently asked questions about Outline
Does Outline offer a free plan?▼
Is Outline GDPR compliant?▼
Can Outline be self-hosted?▼
Does Outline integrate with Slack?▼
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Tech sheet
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