Nextcloud

Decentralized Applications

Most widely deployed open-source self-hosted collaboration platform: file sync & share, office suite (Collabora/OnlyOffice), Talk (video/chat), Mail, Calendar, social (ActivityPub), 400+ apps

Hybrid Company Low capture risk
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Details

License AGPL
Dev Status Released
Owner Nextcloud GmbH (Frank Karlitschek, CEO; Björn Schießle, co-founder)
Country Germany
Start Year 2016
Stack PHP, TypeScript/Vue, Go
Funding VC, NGI
Last Investigated Mar 10, 2026

Use Case Domains

Co-Creation & Knowledge Platform Evolution & Sovereignty

Affordances

Self-hostable Data portability Conflict-free editing

Decentralized Application Attributes

Use Case Category Productivity + File Sharing + Collaboration + Social Network
User Interface Type File browser + Document-centric
Offline Capabilities Read-only offline (via desktop sync client)
Collaboration Features Real-time editing (OT), video conferencing (Talk), chat, file sharing, whiteboard, Teams, version history
Data Portability Full export (all formats); open standards
Integration Ecosystem 400+ apps + browser extensions + API integrations
Prosocial Coherence Moderation tools (per-instance admin)
Economic Flows N/A
Governance & Decision Making Company-controlled (Nextcloud GmbH) + open-source community
Media / Publishing Yes
Knowledge Management Yes (Collectives wiki, Knowledge apps)
Sensemaking Yes (AI Assistant)
Project Management Yes (Deck Kanban, Tasks)
Data Sovereignty Full self-hosting; data on user-controlled server; GDPR-compliant by design