OpenProject
GPL-3.0 enterprise project management. EU-incorporated, no CLOUD Act exposure, native Gantt and agile tooling — without Jira's per-seat lock-in.
Open Source Alternatives: The Sovereign Stack
A curated database of vetted open source alternatives to proprietary SaaS. Find tools that are safe, compliant, and ready for business.
Showing of 125 solutions
Appsmith
Open-source platform for building internal tools, dashboards, and automated workflows — a self-hostable 'High-Code Low-Code' alternative to Retool. SSO and audit logs require the Enterprise edition.
Excalidraw
A virtual whiteboard for sketching hand-drawn like diagrams. End-to-end encrypted, instant, and privacy-first.
Plane
AGPL-3.0 project management platform — sprint/epic model, HIPAA Eligible self-hosted, full data sovereignty. SSO and air-gapped require the paid enterprise tier.
Thunderbird
Desktop email, calendar, and contacts client — data lives on-device in standard IMAP/Maildir formats with zero lock-in to any email provider.