Best Free & Open Source Alternatives to Google Drive

Syncthing is an open-source, continuous file synchronization program that synchronizes files between two or more computers in real time. Unlike Dropbox or Google Drive, Syncthing transfers data directly between your devices using a peer-to-peer protocol — no data ever passes through or is stored on a central cloud server.

Syncthing works across Windows, macOS, Linux, Android, and other platforms. It features conflict resolution, selective sync, per-folder ignoring rules, and encrypted node connections using TLS. An optional relay infrastructure helps when devices cannot connect directly (e.g., both behind NAT), but communication is always encrypted end-to-end.

Because there is no central server, there is no subscription, no storage limit (except your own devices), and no company with access to your files. Syncthing is particularly popular among privacy-conscious users and self-hosters who want cloud-like convenience without the cloud.

OpenCloud is an open source file management and collaboration platform designed as a sovereign alternative to proprietary cloud storage services. It enables teams to store, sync, and share files securely while keeping full control over their data.

Built for simplicity and modern infrastructure, OpenCloud supports self-hosting and provides a clean, intuitive interface for managing documents and collaborating with others. It is designed to be lightweight and easy to deploy compared to heavier alternatives.

With an Apache-2.0 license and active development, OpenCloud is a strong choice for organizations that want the convenience of cloud collaboration without the vendor lock-in of services like Google Drive, Dropbox, or Microsoft SharePoint.

Paperless-ngx is an open-source document management system that transforms your physical paper documents into a searchable online archive. It uses OCR (Optical Character Recognition) to extract text from scanned documents, making every word searchable.

Key features include automatic document tagging using machine learning based on the content of your documents, correspondent and type classification, custom metadata fields, PDF thumbnails, and a clean modern web interface. Documents can be added via the web UI, email, or a watched folder.

Paperless-ngx is a community-maintained fork of the original Paperless and paperless-ng projects, combining the best improvements. It integrates well with document scanners and supports bulk operations. For home users and small offices drowning in paper, it provides a powerful and private alternative to cloud document management services like Google Drive or Dropbox.

Nextcloud is the world's most popular open-source, self-hosted cloud platform. It started as a file sync and share solution (like Dropbox or Google Drive) and has evolved into a comprehensive productivity suite with files, calendar, contacts, email, talk (video/chat), and hundreds of apps available through the Nextcloud App Store.

Nextcloud Files provides desktop sync clients for Windows, macOS, and Linux, as well as mobile apps for iOS and Android. Files can be shared with granular permissions, encrypted, and version-controlled. The platform integrates with ONLYOFFICE and Collabora Online for in-browser document editing, effectively replicating the full Google Workspace experience on your own infrastructure.

With over 34,000 GitHub stars and licensed under AGPL-3.0, Nextcloud is the gold standard for self-hosted cloud storage. It is deployable on any Linux server, available as a one-click install via Docker, and maintained by Nextcloud GmbH with an active enterprise support offering. For organizations wanting to replace Google Drive and the broader Google Workspace, Nextcloud is the most complete solution.

Seafile is a high-performance, open-source file synchronization and sharing platform designed for reliability and speed. It uses a unique library-based storage model with client-side encryption, making it one of the most secure self-hosted Google Drive alternatives available. Files are organized into libraries that can be synced independently and selectively.

Seafile excels in performance and scalability, making it well-suited for organizations with large numbers of users and files. It provides desktop sync clients for Windows, macOS, and Linux, along with mobile apps. The platform includes file versioning, trash recovery, shared links with passwords and expiry dates, and fine-grained permission management. It also integrates with ONLYOFFICE for online document editing.

With over 14,000 GitHub stars, Seafile is widely deployed by universities, enterprises, and government organizations. It offers a Community Edition (open-source, AGP-3.0) and a Pro Edition with additional features. It can be deployed on Linux servers or via Docker, and is a strong choice for teams that prioritize performance, reliability, and data sovereignty over Google Drive.

ownCloud is the original open-source file sync and sharing platform that pioneered the concept of self-hosted cloud storage and directly inspired the creation of Nextcloud. It provides a complete solution for storing, syncing, and sharing files across devices with a user experience similar to Google Drive, but on infrastructure you control.

ownCloud offers desktop sync clients for all major operating systems and mobile apps for iOS and Android. Files can be shared with internal and external users with fine-grained permissions. Enterprise features include SSO integration, antivirus scanning, encryption at rest, and audit logging. The ownCloud Infinite Scale (oCIS) project is a modern, cloud-native rewrite of the platform built for scalability.

With over 8,700 GitHub stars and licensed under AGPL-3.0, ownCloud is widely deployed across enterprises and public sector organizations. It is a battle-tested, enterprise-grade alternative to Google Drive for organizations that require compliance, data sovereignty, and professional support.

SafeBucket is an open-source, self-hosted file sharing platform designed for teams that want full control over their data. Unlike traditional cloud storage solutions, SafeBucket ensures that files never touch your server — uploads and downloads go directly to your S3-compatible storage backend via presigned URLs, while the API handles only metadata, access control, and audit logging.

The platform is built with a security-first, SSO-first mindset. It integrates with any OIDC identity provider for authentication, supports multifactor authentication via TOTP, and enforces role-based access control at both the platform and bucket level. Every sharing action is scoped to buckets with explicit membership rules, and all activity is tracked in real-time audit logs.

SafeBucket's modular architecture allows you to swap out every infrastructure component. Use AWS S3 or self-hosted MinIO for storage, PostgreSQL or SQLite for the database, and NATS or SQS for event handling. It ships with Docker Compose templates for quick local deployment and is actively maintained with signed container images.

Twake Drive is an open-source, encrypted data-storage platform built for teams and organizations. It lets you store files and folders securely—either in the cloud or on your own servers—while providing collaboration and sharing features.

Key features

• Encryption & data control — Files and associated metadata are encrypted with unique keys to protect confidentiality and integrity.
• Shared Drives & collaboration — Create shared folders for teams, set access rights, and share files by link (public or protected).
• Built-in office suite integration — Create and edit documents, spreadsheets, and presentations directly within the platform (e.g., integrations such as ONLYOFFICE).
• Powerful search — Search by content, filename, or sender to locate files quickly.
• On-premises deployment — Option to self-host for full data sovereignty and control.
• Open source — Source code is publicly available for review, modification, and community contribution.

Who it’s for

• Teams and organizations that need secure file storage and easy sharing with collaboration features.
• Companies that require control over where data is hosted (on-premises vs. cloud).
• IT teams that prefer deployable, auditable open-source software.
• Regulated industries that need stronger data-sovereignty and compliance options.

Why consider it?

• Strong focus on privacy, encryption, and hosting control.
• Combines storage and collaboration in one platform (reduces tool sprawl).
• Open-source nature reduces vendor lock-in and allows audits or customizations.
• On-premises option benefits organizations with strict compliance needs.

Things to check / keep in mind

• On-premises deployment requires IT resources for setup, maintenance, and infrastructure.
• Evaluate performance at your expected scale (users and stored data volume).
• Confirm integrations with your identity management, backup, and DR systems.
• Open source does not always mean free—consider hosting, support, or premium feature costs.