Notion vs OpenProject: Complete Comparison (2026)

Why choose Notion

• Higher Integration score (8/10 vs 5/10)
• Higher Ease of Use score (7/10 vs 5/10)
• Better fit for freelancers (7/10 vs 2/10)
• Better fit for startups (9/10 vs 4/10)

Why choose OpenProject

• Higher Cost score (8/10 vs 6/10)
• Higher Analytics score (6/10 vs 5/10)

Notion

Pros

• Relational databases and nested pages let teams build their own trackers, wikis and project systems without a fixed workflow.
• Docs, knowledge base, calendar, forms and published sites are bundled in one workspace, which can replace several separate tools.
• Business includes AI agents, meeting notes and cross-app Enterprise Search without a separate per-seat AI add-on.
• Enterprise security covers SCIM, audit logs, SIEM and DLP connections, and zero data retention with AI providers.
• Strong review ratings, around 4.6 on G2 and 4.7 on Capterra.

Cons

• Reviewers repeatedly report slow loading and lag in large databases and workspaces.
• Offline support is weak and the mobile app does less than the desktop app.
• Plus includes only an AI trial, so teams that want working AI must pay for Business.
• Since late 2026, AI use beyond the monthly credit allowances pauses unless an admin buys extra credits, and some legacy discounted customers have reported large increases at renewal.
• Teams must design their own structure before it works well for project management, and new users describe the setup as unintuitive.

OpenProject

Pros

• The free self-hosted Community edition is GPLv3 open source and shares one codebase with the paid editions.
• It hosts cloud data in the EU, encrypts it with AES-256 at rest, and offers a signable GDPR data processing agreement.
• It supports classic Gantt planning and agile boards and backlogs in the same tool.
• Time and cost tracking with budget reports is built in.
• Long contract terms carry large discounts, for example fifteen months free on a five-year term.

Cons

• Paid plans require at least 25 users, and Premium requires 100.
• Several Reddit users report that self-hosted installation is hard, and some find the tool too elaborate for simple needs.
• Slack, Toggl and Mattermost connections are unsupported community plugins.
• Reviewers say the interface is less polished than tools like Asana, and that resource and workload management is weak.
• Many features, including SSO and portfolio management, require paid Enterprise tiers.