Nextcloud

Decentralized Application

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

Company

Links

Visit Community

Details

License

Libre — AGPL (github.com/nextcloud)

Dev Status 🟢 Active

Dev Status Detail

Released (Hub 10 / Hub 25 latest)

Owner

Nextcloud GmbH (Frank Karlitschek, CEO; Björn Schießle, co-founder)

Country

Germany

Start Year 2016

Stack

PHP (server) + TypeScript/Vue (frontend) + Go (some services)

Funding

VC + NGI grants

Last Investigated Mar 9, 2026

Use Case Domains

Co-Creation & Knowledge

Platform Evolution & Sovereignty

Affordances

Self-hostable

Data portability

Conflict-free editing

Decentralized Application Attributes

Origins

Productivity + File sharing; forked from ownCloud

Database

ACID monolithic (MySQL/PostgreSQL/SQLite)

Query Language

LDP (Linked Data Platform) + WebDAV

Data Formats

Custom + RDF + Markdown + Office formats (via Collabora/OnlyOffice)

Collaborative Live Editing

Yes (via Collabora Online / OnlyOffice)

Rich Text Editing

Yes

Mobile Support

Yes (iOS + Android native apps)

Web Support

Yes

Native Apps

Yes (desktop sync: Windows, macOS, Linux)

Terms

Self-hosting + Freemium SaaS + Enterprise licensing

Funds

Undisclosed total (VC-backed, multiple rounds)

Based On

Standard web protocols (WebDAV, CalDAV, CardDAV)

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

Web2 Data Export

Yes (Google, Outlook, Microsoft integration)

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