The best open source alternative to Google Workspace is Paperless-home. If that doesn't suit you, we've compiled a ranked list of other open source Google Workspace alternatives to help you find a suitable replacement. Other interesting open source alternatives to Google Workspace are: CryptPad, Tuta, ONLYOFFICE Docs, and LibreOffice.
Google Workspace alternatives are mainly Collaboration & Communication Tools but may also be Productivity & Utilities or Business Software. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Google Workspace.
A powerful open-source solution for managing, organizing, and searching your digital documents with ease and efficiency.

Paperless-home is an innovative open-source document management system designed to simplify your digital life. It transforms the way you handle documents, receipts, and invoices by providing a seamless, automated solution for organizing and accessing your important files.
Key features and benefits:
By eliminating paper clutter and digitizing your documents, Paperless-home helps you save time, reduce stress, and create a more organized and efficient workflow. Whether you're managing personal finances, running a small business, or simply trying to declutter your life, Paperless-home provides the tools you need to take control of your document management.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.

CryptPad is a privacy-focused collaboration platform that puts security at the forefront of team productivity. Built with end-to-end encryption, every document, spreadsheet, presentation, and shared file remains completely private - even the server administrators cannot access your content.
This open-source suite provides all essential collaboration tools including:
Unlike traditional cloud platforms, CryptPad ensures your sensitive business data never leaves your control. The zero-knowledge architecture means encryption happens in your browser before data reaches the servers, making it impossible for third parties to intercept or access your work.
Perfect for organizations prioritizing data sovereignty, remote teams handling confidential information, and privacy-conscious users who refuse to compromise security for convenience.
Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

Tuta is a secure communication platform that provides end-to-end encrypted email, calendar, and contacts.
Key features:
Tuta uses renewable energy to power its services, demonstrating a commitment to sustainability. The platform is trusted by thousands of businesses, including financial institutions and human rights organizations, to safeguard sensitive communications.
With Tuta, you can take back control of your data and enjoy private, secure communication without compromising on features or ease of use. Whether for personal or business use, Tuta provides a comprehensive solution for those who value their digital privacy and security.
Open-source online editor for documents, spreadsheets, presentations, and PDFs. Features real-time collaboration, AI integration, and accessibility tools.

ONLYOFFICE Docs is a comprehensive online office suite that handles all your document editing needs in one powerful platform. Create and edit text documents, spreadsheets, presentations, PDFs, and fillable forms with professional-grade tools and features.
Key Features:
Security & Privacy:
Flexible Deployment Options:
The platform includes ready-made templates to get started quickly and offers dark theme support for comfortable work in any environment. Whether you're working solo or with a team, ONLYOFFICE Docs provides the tools you need for professional document creation and collaboration.
Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.

A complete office suite that provides all the essential tools for document creation, spreadsheet management, and presentation design. Built as the successor to OpenOffice, this solution offers full compatibility with Microsoft Office formats including .doc, .docx, .xls, .xlsx, .ppt, and .pptx files.
Key advantages:
The suite includes multiple applications for different document types:
Perfect for businesses, students, and individuals seeking a reliable Microsoft Office alternative without the cost. The active community ensures continuous development and support, making it a sustainable long-term solution for all office productivity needs.