Alternatives to ownCloud

Nextcloud

29,733

AGPL-3.0

Nextcloud is a powerful, open-source file hosting and collaboration platform that puts you in control of your data. Originally forked from ownCloud in 2016, Nextcloud has evolved into a comprehensive solution that combines file storage, sharing, and synchronization with a rich ecosystem of collaborative tools and applications.

Key Features

File Storage & Sync:
- Cross-platform file synchronization
- Selective sync capabilities
- Version history and file recovery
- Collaborative file editing
- File sharing with permissions
- External storage integration
Collaboration Tools:
- Calendar and contact management
- Mail client integration
- Video conferencing (Nextcloud Talk)
- Project management (Nextcloud Deck)
- Real-time document collaboration
- Team workspaces
Security & Privacy:
- End-to-end encryption
- Server-side encryption
- Two-factor authentication
- Brute force protection
- File access control
- Activity monitoring and audit logs
Communication:
- Built-in chat and video calls
- Screen sharing capabilities
- Voice messages
- File sharing in conversations
- Integration with external chat systems
- Mobile push notifications
Office & Productivity:
- Online office suite (Collabora/OnlyOffice)
- Document templates
- Form builder
- Note-taking applications
- Password manager integration
- Bookmark management
Enterprise Features:
- LDAP/Active Directory integration
- Single sign-on (SSO) support
- Group and user management
- Quota management
- Compliance and governance tools
- Enterprise support options
Extensibility:
- Rich app ecosystem (200+ apps)
- Custom app development
- Theming and branding
- Workflow automation
- Third-party integrations
- API for custom solutions

Technical Specifications

Backend: PHP with Symfony components
Database: MySQL, MariaDB, PostgreSQL, SQLite
Web Server: Apache HTTP Server or Nginx
Frontend: Vue.js and JavaScript
Mobile: Native iOS and Android apps
Desktop: Cross-platform sync clients
Standards: WebDAV, CalDAV, CardDAV, LDAP

Seafile

13,163

NOASSERTION

Seafile is a high-performance file hosting and collaboration platform specifically designed for teams and organizations. Built with a focus on reliability, security, and performance, Seafile offers enterprise-grade features while maintaining simplicity and ease of use.

Key Features

High-Performance Sync:
- Delta synchronization (only sync changed parts)
- Efficient bandwidth usage
- Fast file transfer protocols
- Intelligent conflict resolution
- Selective folder synchronization
- Pause and resume capabilities
Team Collaboration:
- Shared libraries and workspaces
- Real-time collaborative editing
- File comments and discussions
- Activity feeds and notifications
- Team permission management
- Guest user access
Enterprise Security:
- Client-side encryption
- Server-side encryption at rest
- Two-factor authentication
- Granular access controls
- Audit logging and compliance
- Remote device management
File Management:
- File versioning and history
- File locking for editing
- Advanced search capabilities
- Bulk file operations
- File preview and thumbnails
- Trash and recovery
Administration:
- Centralized admin console
- User and group management
- Storage quota management
- System monitoring and logs
- Backup and restore tools
- Multi-tenancy support
Integration & APIs:
- LDAP and Active Directory
- Single sign-on (SSO) support
- RESTful APIs
- WebDAV support
- Third-party integrations
- Custom app development
Platform Support:
- Cross-platform desktop clients
- Mobile apps (iOS/Android)
- Web interface
- Command-line tools
- Docker deployment
- Cloud marketplace availability

Technical Specifications

Server: Python with C extensions
Database: MySQL, MariaDB, PostgreSQL, SQLite
Storage: Local filesystem, S3, Swift
Web Server: Nginx (recommended), Apache
Clients: Windows, macOS, Linux, iOS, Android
Protocols: HTTP/HTTPS, WebDAV
Encryption: AES-256, RSA

Performance Advantages

Delta Sync: Only transfers changed file blocks, not entire files
Clustering: Supports horizontal scaling for large deployments
CDN Support: Integration with content delivery networks
Caching: Intelligent caching for improved performance
Optimized Protocol: Custom sync protocol for efficiency

Pydio

1,969

AGPL-3.0

Pydio Cells is a next-generation file sharing and collaboration platform built from the ground up with modern microservices architecture. Designed for enterprises that need a secure, scalable, and highly customizable alternative to cloud storage providers, Pydio offers comprehensive file management with advanced security and compliance features.

Key Features

Modern Architecture:
- Microservices-based design
- Built with Go for performance
- React-based modern interface
- Event-driven architecture
- Horizontal scalability
- Cloud-native deployment
Enterprise File Management:
- Advanced file synchronization
- Intelligent file sharing
- Comprehensive version control
- Metadata management and indexing
- Full-text search capabilities
- Bulk file operations
Collaboration Platform:
- Real-time collaborative editing
- Workspace management
- File comments and annotations
- Activity feeds and notifications
- Team and project organization
- Guest user management
Security & Compliance:
- End-to-end encryption
- Granular access control lists
- Comprehensive audit logging
- Data loss prevention (DLP)
- GDPR compliance tools
- Security policy enforcement
Enterprise Integration:
- LDAP and Active Directory
- Single sign-on (SSO) support
- Multi-tenant architecture
- Custom branding and theming
- API-first design
- Third-party integrations
Advanced Features:
- Workflow automation
- Custom metadata schemas
- Advanced search and filtering
- File lifecycle management
- Retention policies
- Legal hold capabilities
Platform Support:
- Web-based interface
- Mobile applications
- Desktop sync clients
- API access
- WebDAV support
- Command-line tools