Free Office & Productivity Apps

Free and open-source office suite with advanced word processing, spreadsheets, presentations, vector graphics, math formula editor, and database tools.

Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc.

Obsidian is a note-taking app that lets you create a personal knowledge graph with ease. It is designed for non-linear thinking and allows you to easily link your notes together wiki-style.

On-premises file sync, universal access, integrated collaboration, real-time communication with privacy and data control focus.

Open source note-taking app with Markdown support, to-do integration, and synchronization with cloud services like Dropbox and OneDrive.

Highly customizable browser with built-in ad and tracker blockers, Chromium compatibility, advanced tab management, cross-device sync, and strong privacy features.

Open-source suite for editing documents, spreadsheets, presentations, forms, and PDF files with co-editing modes, plugin support, AI assistant, and integration across 40+ platforms.

A versatile open-source word processor with robust formatting, style options, and cross-platform availability, ideal for both memos and complex book publishing.

Experience robust security, multiple accounts, chat, and fast search with efficient Gmail email management in a streamlined interface.

Free multi-platform software for task management, time tracking, and personal project management. Seamless integration with Jira, GitHub, and GitLab.

Local-first, privacy-focused notebook supporting Markdown and Org mode, offline use, encrypted backup, extensible with plugins, and more.

Organizes notes, tasks, and projects offline using Markdown, P2P syncing, and encrypted storage, complemented by dynamic collections on all devices.

Streamline teamwork with real-time collaboration, drag-and-drop content organization, and visual simplicity across notes, tasks, wikis, and databases.

Multi-platform document viewer supporting PDF, EPUB, comics and images with annotation tools, sidebar navigation, signature verification, and text-to-speech.

End-to-end encrypted app for email, calendar, and contacts, requiring no personal data, with open source code and quantum-resistant security.

An open-source Windows scripting language enabling task automation through hotkeys, macros, and keystrokes, useful for creating custom forms and automating data entry.

Organize tasks with boards, lists, and cards, and customizable workflows. Ideal for projects, collaboration, and effortless progress tracking.

Fully open-source, end-to-end encrypted notes with device-based security, secure sync, offline access, powerful editor, vault, backups, and exports.

Cross-platform app for creating and organizing notes from text, web pages, images, and voice memos. Offers security features and integrates with various tools.

LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.org Calc, professional data miners and number crunchers will appreciate its comprehensive range of advanced functions.

Open-source app tracking time on devices, maintaining privacy and versatility, with features like productivity insights, Pomodoro timers, and local data storage.

Multi-platform clipboard tool monitoring and saving text, images, and custom formats, with tabs, search, shortcuts, scripting, and customization for efficiency.

Comprehensive writing tool for notes, citations, and drafting with privacy-first features and multi-language support, perfect for diverse writing tasks.

Personal AI assistant operating locally, supporting popular chat apps, additional channels, multi-OS speech and listening, and a live user-managed Canvas.

Free, lightweight PDF viewer available on multiple platforms. Features include annotation, form-filling, signing, cloud integration, and more.