Sites and apps similar to Proton Docs include Joplin, which is open source with a free version. Other options are ONLYOFFICE, LibreOffice - Writer, Google Docs and CryptPad. There's no shortage of Word Processors like Proton Docs, with more than 50 alternatives for Mac, Windows, Linux, Android and iPhone.
Document creation and collaboration platform offering affordable and efficient tools for real-time team sharing. Supports internal and public access, frequent updates, team management, and customization options. Designed for productivity, organization, and secure data handling.
Private browser office suite combining document, spreadsheet, presentation, project, PDF, and note tools. It offers AI assistance, local browser processing, common file exports, PWA installation, bilingual support, and free cross-device access.
Brazil
A modern AI document editor, write your documents with ease with intergrated Context aware AI.
Marble is a beautiful online Markdown editor and collaborative workspace. Write in Markdown, and a clean note will appear to greet you. You can share a link with collaborators and write together in real time. Add tables, code blocks, math, and Mermaid diagrams.
United Kingdom
AI-first, open-source office app for documents, spreadsheets, presentations, and PDFs—with desktop and browser editing, plus TypeScript and Go APIs.
Storyloft is an AI-powered writing, design, and publishing platform that helps authors write, edit, format, and publish books—all in one place.
United States
Skrivla is where people and AI write together. It's like a minimal Google Docs or Notion where you can easily bring your own AI. Perfect for quick brainstorming sessions, feature specs, meeting notes, and more.
Sweden
EU
Free, open-source AI Office suite: Docs, Sheets, Slides, PDF, Markdown and HTML editors with a built-in AI agent, plus a genoffice CLI and agent skill so Claude Code, Codex and Cursor can create and edit real .docx/.xlsx/.pptx files locally. Bring your own key. macOS, Windows & Linux.
China
Qaxa is an end-to-end encrypted workspace for teams. Chat in real time, assign tasks, write notes, and share files — all encrypted on your device. Your encryption keys stay with you, so Qaxa can’t read your content. No trackers. No logs. No AI training.
SlovakiaEU
