I've been building my productivity setup exclusively from open-source tools for the past year. Here's what I found, what surprised me, and the tools I actually kept using.
Why Go Open Source for Productivity?
The obvious reason is privacy. When your tools are auditable, you can verify what they do with your data. But there's another reason: stability. Open-source tools don't get acquired and shut down, don't add dark patterns to the free tier, and don't suddenly become subscription-only.
Here's my open-source productivity stack, with notes on each tool.
Browser Tools
Firefox (browser)
The obvious base. Privacy-by-default with uBlock Origin, Firefox Containers, and the Firefox Multi-Account Containers extension.
Why Firefox over Chromium? Firefox is the only major browser not controlled by a company with significant advertising revenue. That matters when evaluating privacy defaults.
Weather & Clock Dashboard (new tab replacement)
Replaces your Firefox new tab with live weather, world clocks, and a search bar. MIT licensed, pure HTML/CSS/JS, no data collection.
Why I kept it: The world clock feature eliminated my habit of googling "time in London." The weather preview is genuinely useful for planning outdoor activities without opening a separate app.
Install: Firefox Add-Ons
Source: GitHub
uBlock Origin
The gold standard for ad/tracker blocking. Open source (GPL), highly configurable, maintained by a single developer who takes privacy seriously.
Advanced tip: Enable the "I am an advanced user" mode and try the dynamic filtering rules. It's more powerful than most people realize.
Firefox Multi-Account Containers
Isolates websites into separate "containers" so they can't track you across sites. Developed by Mozilla, open source.
Use case: Put your work accounts in a "Work" container, personal accounts in "Personal." Cookie isolation happens automatically.
Note-Taking
Obsidian (mostly open format)
Technically not fully open-source (the editor is proprietary), but your notes are stored as plain Markdown files. That means: no lock-in, works with any text editor, full offline capability.
Open-source alternative: Logseq is fully open-source and has a similar graph-based approach.
Joplin
Fully open-source Markdown note-taking with end-to-end encryption and self-hosting options. Less polished than Obsidian but completely free.
Best for: People who want to self-host their sync or need E2E encryption by default.
Task Management
Vikunja
Open-source alternative to Todoist/Things/TickTick. Can be self-hosted. Has projects, labels, assignees, due dates, and Kanban boards.
Try before self-hosting: Vikunja has a hosted version at try.vikunja.io.
Planka
Self-hosted Trello alternative. Extremely clean UI, fast, and straightforward. Works great for project boards.
Terminal / Developer Tools
Zsh + Oh My Zsh
Better shell with excellent auto-completion and plugin ecosystem. The z plugin alone (which learns your most-visited directories) saves significant time.
Neovim
For those willing to invest the setup time. I use it alongside VS Code — VS Code for larger projects, Neovim for quick file edits and terminal work.
File Management
Syncthing
Peer-to-peer file sync between your devices. No cloud storage required. End-to-end encrypted. Works on Linux, macOS, Windows, Android.
Use case: Keep documents synced between laptop and desktop without Dropbox or Google Drive.
The Pattern I Noticed
After a year of this experiment, the best open-source productivity tools share common traits:
- Single-purpose — they do one thing well
- Small file footprint — no Electron apps with 500MB RAM usage
- Plain data formats — Markdown, JSON, SQLite — not proprietary formats
- Active maintenance — regular commits, responsive issue tracker
The Weather & Clock Dashboard checks all of these: pure HTML/CSS/JS (no framework bloat), stores preferences in localStorage (plain JSON), MIT licensed, and actively maintained on GitHub.
What I Gave Up
Honest assessment: some proprietary tools are better. Notion's collaborative features beat anything open-source I've found. Figma has no real open-source competitor. Slack's UX is polished in ways that Matrix/Element isn't.
But for personal productivity — notes, tasks, browser, terminal, file sync — the open-source alternatives are genuinely excellent, and in some cases better.
What open-source productivity tools are you using? I'm always looking for new options.
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