1077 open-source vendors
1077 vendors in the knowledge base offer their software as open source, across 88 categories. Open source is the highest form of technological sovereignty: you can audit the source code, self-host it, and keep the encryption keys under your own control, regardless of the developer's headquarters.
By category
Last checked: 11 October 2026.- AI23 vendors
- AI Coding18 vendors
- AI Cowork23 vendors
- AI Security18 vendors
- Analytics16 vendors
- API Management18 vendors
- BPM & Workflow26 vendors
- Browser24 vendors
- Business Email & Groupware23 vendors
- Business Intelligence10 vendors
- CAD & Engineering10 vendors
- Captcha & Bot Detection7 vendors
- CDN, DNS & Domains13 vendors
- Cloud IaaS1 vendor
- Cloud PaaS8 vendors
- Cloud Storage (Personal)8 vendors
- CMS33 vendors
- Collaboration25 vendors
- Compliance & GRC2 vendors
- Consent Management (CMP)6 vendors
- CRM11 vendors
- Customer Data Platform (CDP)4 vendors
- Cybersecurity13 vendors
- Data Governance & MDM20 vendors
- Data Integration & ETL13 vendors
- Data Platform & Warehouse24 vendors
- Database & Data Management29 vendors
- Design9 vendors
- Desktop OS52 vendors
- DevOps39 vendors
- Digital Asset Management4 vendors
- Digital Signage3 vendors
- DNS Privacy & Filtering14 vendors
- Document Management (DMS)11 vendors
- E-commerce10 vendors
- E-learning Authoring8 vendors
- E-signatures1 vendor
- Education & LMS14 vendors
- Email (Personal)9 vendors
- Endpoint & Device Management4 vendors
- Enterprise Search8 vendors
- ERP & Finance7 vendors
- Error Tracking3 vendors
- ESG & Sustainability1 vendor
- Feature Flagging & Experimentation9 vendors
- FinOps & Cloud Cost Management5 vendors
- Forms & Surveys8 vendors
- GIS & Geospatial25 vendors
- Healthcare4 vendors
- Helpdesk & Customer Service8 vendors
- HR2 vendors
- Identity21 vendors
- IoT & Embedded14 vendors
- ITSM11 vendors
- Legal Tech1 vendor
- Low-code / No-code16 vendors
- Maps & Navigation10 vendors
- Marketing5 vendors
- Messaging19 vendors
- Music Streaming3 vendors
- Network & Firewall Management9 vendors
- Network & Monitoring38 vendors
- Notes & Tasks22 vendors
- Office & Productivity23 vendors
- Password Manager15 vendors
- Personal Backup & Sync11 vendors
- Photo & Video13 vendors
- Planning & EPM2 vendors
- Process Mining & RPA10 vendors
- Product Feedback & Roadmapping2 vendors
- Project Management12 vendors
- Remote Desktop & Support4 vendors
- Scheduling & Booking3 vendors
- Search Engines3 vendors
- Social Media19 vendors
- Storage & Backup13 vendors
- Tag Management2 vendors
- Telephony & VoIP6 vendors
- Testing & QA18 vendors
- Time Tracking1 vendor
- Transactional Email1 vendor
- Translation & Localisation5 vendors
- Video Streaming1 vendor
- Virtualisation & Containers39 vendors
- VPN12 vendors
- Web Hosting1 vendor
- Whiteboarding & Visual Collaboration3 vendors
- Writing Assistance & Grammar5 vendors
How we count
A vendor counts as open source here when its source code is published under an OSI-approved licence (for example Apache 2.0, MIT, GPL or AGPL) and that code is what actually runs the product, not a proprietary wrapper around an open core. Each entry carries one of four sovereignty badges: EU sovereign (headquartered and hosted inside the EU/EEA), Self-hosted / open source (you control where it runs, regardless of the maintainer's location), EU-hosted, non-EU parent (hosted in the EU but ultimately owned outside it — the real CLOUD Act signal), and Non-EU vendor (headquartered and typically hosted outside the EU). The badge reflects where control actually sits, not just where the headquarters is. Borderline ownership and licensing cases follow our published provenance policy, which sets out how we classify open-core products, foundation-governed projects and recently acquired vendors. Provenance policy (ADR-001)
Assess your own stack in the assessment
Assess your stack →