Apps similar to Collabora Office Classic include LibreOffice, which is free and open source. Other options are ONLYOFFICE, Microsoft 365 Copilot, CryptPad and Apache OpenOffice. There's no shortage of Spreadsheet Apps like Collabora Office Classic, with more than 50 alternatives for Windows, the web, Linux, Mac and Android.
Comprehensive free office suite supporting word processing, advanced spreadsheets, dynamic presentations, vector drawings, math formulas, and robust database management. Fully compatible with major office formats across all operating systems, it offers extensive capabilities for personal or professional tasks.
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Open-source office suite offering document, spreadsheet, and presentation editing with co-editing modes, plugin support, integration across 30+ services, robust security, and mobile access. Available in Community, Enterprise, and Home Server editions for versatile deployment.
LatviaEU
Office suite offering productivity tools, document creation, and collaboration. Features AI-enhanced editing, mobile app access to documents and shared workspaces. Formats include word processing, spreadsheets, presentations, and email services.
United States
CryptPad is a private-by-design alternative to popular office tools and cloud services. All the content stored on CryptPad is encrypted before being sent, which means nobody can access your data unless you give them the keys.
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Apache OpenOffice is a leading open-source office suite that offers free applications for word processing, spreadsheet, presentations, graphics, databases and more. All data is stored in an open standard format, though Open Office can also read and write files from other common...
United States
Comprehensive spreadsheet tool offering advanced data management with features like pivot tables, data visualization, and customizable charts for professional use in creating detailed reports and analyses.
United States
End-to-end encrypted spreadsheets enabling secure business data management, real-time collaboration with access controls, data analysis with automatic functions and visual tools, integration with cloud storage, and cross-device workspace access for teams.
Switzerland
Cloud spreadsheet app featuring real-time editing, support for Excel and CSV import/export, chart building, formula functionality, integrated chat, access controls, cloud syncing, access via web and mobile platforms, scripting, embedding, templates, and Drive integration.
United States
Private offline document reader and organizer supporting PDFs, DOCX, TXT, Markdown, CSV, TSV, and HTML files, enabling editing, formatting, folder browsing, sorting, favorites, and recent file tracking. No ads or tracking, with customizable themes and layouts.
India
Docs in Proton Drive are end-to-end encrypted so your work stays safe from data breaches, online surveillance, and can never be fed into AI models.
Switzerland
A comprehensive, free office suite offering high compatibility across formats. Supports Android, iOS, Windows, Linux, macOS, and handles text, presentations, spreadsheets, and PDFs. Features document collaboration, multiple languages, strong privacy, and user support.
China
Calligra Suite is an office and graphic art suite by KDE. It contains applications for word processing, spreadsheets, presentation, vector graphics, and editing databases.
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