Office & Productivity

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

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.

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

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

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.

Open-source email service with REST API, SMTP relay, SDKs, domain setup, visual campaign editor, analytics, list management, webhooks, and scheduled sends.

Quartz Studio turns support actions into clear step-by-step documentation, support reports and incident evidence — locally on Windows, without cloud uploads.

Open source suite for mail, calendar, drive, and contacts with self-hosting, privacy, zero cost, open standards, versioned files, and unified login.

Team chat with built-in AI for code and commands, featuring channels, threads, and direct messages. Posts AI-generated results inline for real-time team collaboration.

Automates workflows using natural language input with no coding, connecting in real time to APIs or websites and enabling autonomous agent operation.

Customizable task and terminal manager using Git worktrees, integrated with command-line agents, providing live agent status, VM sandboxing, and session-aware automation.