Top 5 Tettra Alternatives

Tettra is a cloud-based internal knowledge base built around Slack. The idea is straightforward: your team writes documentation in Tettra, connects it to Slack, and an AI bot answers repetitive questions by pulling from your knowledge base. For small teams that live in Slack and need a lightweight place to store company knowledge, Tettra works well enough.

The problems start showing up as your team grows or your needs get more specific. There is no self-hosting option, so all your content sits on Tettra's servers. The editor is basic and does not support real-time collaboration. Pricing starts at $8 per user per month with a 10-user minimum, and features like SSO and SCIM are either paid add-ons or locked to the enterprise plan. There is no diagramming, no nested page hierarchy, and the permission model is limited. If you need something more capable than a simple knowledge base connected to Slack, Tettra runs out of room fast.

Here are five alternatives that handle more than Tettra can.

1. Docmost

Docmost is an enterprise-ready, self-hosted wiki and documentation platform licensed under AGPL-3.0, with a commercial license for enterprises with more needs. If you are moving off Tettra because you want control over your data and a more capable editing experience, Docmost covers both.

The editor is block-based and supports rich text, so you are not limited to basic formatting. Real-time collaboration is built in. Multiple people can work on the same page simultaneously and see each other's changes live. This alone is a major step up from Tettra, where you are editing pages one person at a time.

Content is organized into spaces with nested pages, giving you a proper hierarchy instead of flat categories. Permissions are managed at the space and group level. There is built-in diagramming with Draw.io, Excalidraw, and Mermaid, inline comments, page history, and search that covers your entire workspace including full-text indexing of PDF and DOCX attachments. AI features let you ask questions across your knowledge base, generate summaries, translate pages, and connect to external systems via MCP.

Authentication supports email and password, LDAP, and SSO via SAML and OIDC without needing paid add-ons for basic enterprise features.

Docmost features

• Collaborative Real-time Editor: Work together on pages in real time.
• Diagrams: Built-in support for Drawio, Excalidraw, and Mermaid diagramming tools.
• Spaces: Organize your pages by team, projects, or departments for better collaboration.
• AI: Ask questions across your knowledge base, translate pages, generate summaries, or connect to other systems via MCP.
• Permissions Management: Easily control access to pages with easy-to-understand permissions.
• Groups: Easily grant unified permissions to users via groups.
• Comments: Add inline comments to pages for better communication and feedback.
• Page History: Track changes with a comprehensive version history.
• Nested Navigation: You can nest and reorder pages via the sidebar.
• Search: Quickly find the information you need with powerful search capabilities.
• File Attachment: Attach files to your pages for quick reference and sharing.
• Attachments search: Full-text search and indexing of content in PDF and DOCX file attachments.
• Embeds: Embed content from Airtable, Loom, YouTube, and more.
• Authentication: Email and password, LDAP and SSO login (SAML/OIDC) in the Enterprise edition.

2. BookStack

BookStack is an open-source, self-hosted wiki that organizes content using a fixed hierarchy: Shelves contain Books, Books contain Chapters, and Chapters contain Pages. If you liked Tettra's simplicity but want something you can host yourself, BookStack is worth looking at.

The editor supports both WYSIWYG and Markdown, with Draw.io integration for diagrams. Search works well even across large amounts of content. The permission model is role-based and easy to understand. Authentication supports Okta, Google, GitHub, LDAP, and others.

BookStack runs on PHP and Laravel. A basic LAMP stack is all you need. It installs in minutes and has shipped consistent monthly releases since 2015. The documentation is thorough and the community is helpful. For teams that want a self-hosted wiki with low maintenance overhead, BookStack delivers.

The trade-off is flexibility. The rigid Shelf/Book/Chapter/Page structure works well for organized documentation but is less suited to freeform knowledge bases. There is no real-time collaboration and no AI features.

Pros:

• MIT licensed and fully open source
• Easy to self-host on a basic LAMP stack
• Fixed structure keeps content organized
• WYSIWYG and Markdown editors with Draw.io
• Consistent monthly releases since 2015

Cons:

• No real-time collaboration
• Rigid hierarchy does not suit every use case
• No AI features
• Interface looks dated compared to newer tools

3. Wiki.js

Wiki.js is a Node.js-based wiki built as a modern alternative to older wiki software. If you are leaving Tettra because you want self-hosting with a clean interface and flexible storage options, Wiki.js is a solid choice. It looks good out of the box and Docker-based installation makes deployment straightforward.

The editor supports both Markdown and visual editing. Content is stored in a proper database (PostgreSQL, MySQL, MariaDB, SQLite, or MS SQL) with optional Git-based storage and sync for version control. This gives you flexibility that Tettra's cloud-only approach cannot match. Authentication covers GitHub, Google, Microsoft, LDAP, and SAML. Search uses a built-in engine with optional Elasticsearch for larger deployments.

Wiki.js organizes content with a path-based structure and supports tags and nested pages. The permission system is granular and supports groups and rules. For teams that want a self-hosted wiki that handles authentication and permissions properly without a lot of configuration, Wiki.js gets there with less friction than many alternatives.

One thing to know: Wiki.js 3.0 has been in development for a long time. The current stable version (2.x) works well but has not seen major feature updates recently. If you need a project that is actively shipping improvements, factor that in.

Pros:

• Clean, modern interface out of the box
• Flexible database and Git-based storage options
• Wide authentication coverage including LDAP and SAML
• Granular permission system with group support
• Easy Docker deployment

Cons:

• Version 3.0 has been in development for years
• No real-time collaboration
• Current stable version is not getting major updates
• No built-in AI features

4. Notion

Notion is the tool most teams have tried at some point. Wikis, databases, project management, and notes all live in one workspace. If you outgrew Tettra because you need more than a knowledge base, Notion covers a wider range of use cases than almost anything else available.

The block-based editor is extremely flexible. Linked databases, toggle lists, synced blocks, templates, and embeds all work within the same page. Integrations cover Slack, GitHub, Jira, Figma, Google Drive, and many more. The template library is large and the community is active, so there is a starting point for nearly every use case you can think of.

The downside for teams coming from Tettra with data ownership concerns: Notion is cloud-only. No self-hosting. Performance gets noticeably slower in large workspaces with many linked databases. And while Notion has a wiki feature, it was not purpose-built as an internal knowledge base the way Tettra was. Setting up proper knowledge management workflows takes more configuration.

Pros:

• Does more than any other tool on this list
• Block-based editor is extremely flexible
• Large template library and active community
• Integrations with most tools teams already use

Cons:

• Cloud-only, no self-hosting
• Performance degrades in large workspaces
• Not purpose-built for knowledge management
• Offline mode exists but is unreliable

5. Slite

Slite is a cloud-based knowledge base built for internal teams. It sits in a similar space as Tettra, with a focus on making company knowledge easy to find and keep up to date. If you are leaving Tettra but want something that stays focused on internal knowledge management rather than expanding into project management or documentation, Slite is the closest match.

The editor is clean and supports basic formatting, embeds, and code blocks. Slite has an AI assistant that can answer questions from your knowledge base, similar to Tettra's Slack bot but accessible directly within the app. There is a verification system that nudges content owners to review and update pages on a schedule, which helps keep your knowledge base from going stale.

Slite integrates with Slack, Google Drive, and other common tools. Collections and channels provide basic organization. The interface is simple and easy to pick up without training.

The limitations are similar to Tettra in some ways. No self-hosting. The editor does not support real-time collaboration or advanced formatting. Permissions are basic. And pricing, while competitive, scales with the number of users in the same way Tettra does.

Pros:

• Focused specifically on internal knowledge management
• AI assistant for answering team questions
• Content verification system to keep docs current
• Simple, clean interface
• Slack and Google Drive integrations

Cons:

• Cloud-only, no self-hosting
• No real-time collaboration
• Basic permissions model
• Editor lacks advanced formatting and diagramming

Which one replaces Tettra?

It depends on what pushed you to look for alternatives.

If the main issue is data ownership and you want something significantly more capable, Docmost is the strongest self-hosted option. You get real-time collaboration, diagramming, nested pages, proper permissions, and enterprise authentication without paying extra for features like SSO.

If you want self-hosting but prefer something simpler and more structured, BookStack is easy to deploy and maintain. If you want a self-hosted wiki with a modern interface and flexible storage options, Wiki.js handles that well. If you need a tool that goes beyond knowledge management into databases and project tracking, Notion covers the most ground. And if you want to stay closest to what Tettra does but with a better editor and AI features, Slite is the most direct replacement.