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

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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)

Governing Body Company-controlled (Nextcloud GmbH)

Country

Germany

Start Year 2016

Stack

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

Funding

VC + NGI grants

Last Investigated Mar 9, 2026

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This tool in the centre and the things it is directly related to. Each line names the kind of relationship.

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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

Relationships

How this tool connects to other tools and organizations, from relationships reviewed by the OpenHaven data steward. They describe how projects connect, not how good they are.

Speaks protocol: ActivityPub