Alternatives · Docs & Wikis
Stack Internal alternatives
Stack Internal compared with 4 alternatives: Guru, Tettra, Slite and Confluence.
Stack Internal has a free plan. 1 of the 4 alternatives is free or has a free plan. 2 more offer a free trial.
4 tools · Listings checked up to Oct 6, 2026 · Where the facts come from
At a glance
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| Stack InternalThis tool | Free plan | Yes | Web |
| Guru | Paid | No | Web, Browser extension |
| Tettra | Free trial · from $8/mo | Trial only | Web |
| Slite | Free trial · from $10/mo | Trial only | Web, macOS, Windows, iOS, Android, Browser extension |
| Confluence | Free plan · from $6.70/mo | Yes | Web, iOS, Android |
How each one differs from Stack Internal
- Paid
Guru
Verified company knowledge base with AI search and agents
- Stack Internal has a free plan. Guru does not.
- Only Guru lists a browser extension.
- Guru also covers templates and AI agents.
Suits: Companies that want one verified source of answers for staff and AI tools
- Free trial · from $8/mo
Tettra
Internal knowledge base that answers team questions in Slack
- Stack Internal has a free plan. Tettra does not, though it has a free trial.
Suits: Slack-based teams that field the same questions repeatedly
- Free trial · from $10/mo
Slite
Team knowledge base with doc verification and AI answers
- Stack Internal has a free plan. Slite does not, though it has a free trial.
- Only Slite lists macOS, Windows, iOS and Android apps.
- Only Slite lists a browser extension.
- Slite also covers AI agents and documents.
Suits: Teams that want an internal knowledge base with owned, verified docs
- Free plan · from $6.70/mo
Confluence
Team wiki and docs workspace from Atlassian, tied to Jira
- Only Confluence lists iOS and Android apps.
- Confluence also covers databases, whiteboard, templates and documents.
- Stack Internal also covers AI search.
Suits: Teams that run Jira and want documentation linked to their issues
Limits worth knowing in Stack Internal
- Usage is metered in Flow Credits: a search or answer uses 1 credit and an update uses 3. Credits reset each usage period and unused ones do not roll over.
- The free Starter plan allows 3 collaborators and 1,000 credits a month, and leaves out SSO, audit logs and health and usage insights.
- The Organization plan has no published price: it is quoted by sales according to the number of credits needed.
- Connecting a Stack Overflow enterprise Q&A instance requires a Stack Internal Community Enterprise plan.
Common questions
What are the alternatives to Stack Internal?
The alternatives to Stack Internal in this directory are Guru, Tettra, Slite and Confluence. Each one has a side-by-side comparison with Stack Internal.
Is there a free alternative to Stack Internal?
Yes. Confluence has a free plan alongside paid ones.
Which Stack Internal alternatives work on Windows?
The Stack Internal listing does not include a Windows app. Slite lists one.
Which Stack Internal alternatives work on macOS?
The Stack Internal listing does not include a macOS app. Slite lists one.
When were these prices checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 6, 2026. Vendors change prices without notice, so confirm on their site before you buy.