Confluence vs Stack Internal
Confluence
atlassian.com
Stack Internal
stackoverflow.coSide by side
| Figure | Confluence | Stack Internal |
|---|---|---|
| Price from | $5.42/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 4 | 3 |
| Spec score · Knowledge base software | 9.4 (#2) | 8.7 (#23) |
| Spec score · Internal Knowledge Base Software | 9.3 (#1) | 8.1 (#16) |
| Encryption | Confluence encrypts data in transit with TLS 1.2 or later with perfect forward secrecy and uses AES-256 full-disk encryption at rest. | The security FAQ says data is encrypted in transit and at rest, and Azure data at rest uses AES-256. |
| Free plan | Yes | Yes |
| App integrations | Confluence integrates with other apps teams already use | Listed integrations include ChatGPT, Claude Code, Confluence, Cursor, Gemini, GitHub, Jira, Notion, OpenAI, ServiceNow, Slack, Microsoft Teams and Google Docs. |
| Purpose | Confluence is an organization’s single source of truth for knowledge management and project collaboration. | Stack Internal delivers verified knowledge to people, teams, and AI agents. |
| SSO support | Yes | Yes |
| Support | Free includes Atlassian Community support, Standard provides regional business-hours support, Premium provides 24/7 critical-issue support, and Enterprise provides 24/7 support with a 30-minute critical-issue response time. | Starter includes standard self-service support, while Organization includes dedicated enterprise account management. |
Plans
Confluence
- FreeFree
- Standard$5.42 a month
- Premium$10.44 a month
- EnterprisePriced on request
In their own words
Confluence
Confluence is Atlassian's workspace for knowledge management and project collaboration, with pages, whiteboards, databases and Loom video messaging. Teams can edit content together in real time, comment, and receive notifications when tagged or assigned tasks. Its Jira connection links project tracking with documentation planning, and whiteboards can turn ideas into Jira work. View-only pages can be shared publicly; version history, content analytics and app integrations are also available. Rovo can turn content into timelines, charts, maps, slides and prototypes, while its connectors bring knowledge from services including Google Drive, Slack, Salesforce, GitHub, Microsoft Teams and SharePoint into AI search and workflows. Cloud products are hosted, while Data Center products can run on infrastructure of your choice. The Free plan supports up to 10 users, includes 2 GB of storage and allows three active whiteboards per user. Confluence is available on web, Android, iOS and as self-hosted software. Pricing starts at $5.42/user/mo, and a 7-day trial is listed.
Stack Internal
Stack Internal is a cloud knowledge product that delivers verified information to people, teams, and AI agents. It captures and synthesizes material from AI tools, chat threads, and wikis into knowledge units carrying authorship, recency, usage, provenance, and conflict signals. Teams arrange content in spaces and assign permissions to people, teams, and agents. Listed connectors cover Google Docs, Slack, Microsoft Teams, and Stack Internal Community, with an ingestion API for other tools. An MCP server connects AI assistants and coding agents, including Claude and Cursor, to the stored knowledge. AI search or answers and single sign-on are supported. The Free plan costs nothing for up to 50 teammates. Starter is also free, with up to three collaborators, 1,000 credits monthly, four connectors, a custom ingestion API, and unlimited ingestion. Organization pricing is based on required Knowledge Flow Credits and requires contacting sales. Security listings include ISO 27001/27701, SOC 2 Type II, SCIM, GDPR and SCC.