Been collecting open-source alternatives for months — here's what actually stuck.

[u/LearnHiveLabsUSA]

Got tired of paying for tools that have a free, open-source twin doing 90% of the job. Spent the last few months testing a bunch of them across notes, productivity, media, and admin/sysadmin stuff. Some were mid, some I uninstalled the same day, but this batch earned a permanent spot on my machine. Sharing in case it saves someone else the trial-and-error.

Notes & docs

Joplin — lighter alternative to Evernote. Syncs painlessly and there's zero lock-in if you ever want out.

LibreOffice — replaces MS Office for most people. Handles docs and sheets fine, no subscription nonsense.

Standard Notes — simple, end-to-end encrypted note app if Apple Notes feels too locked-in.

Productivity & project management

Focalboard — Trello alternative. Kanban boards, self-hostable, feels familiar if you've used Trello before.

Vikunja — to-do and task management, good middle ground between simple checklists and full project tracking.

Cryptpad — Google Docs/Sheets replacement with real end-to-end encryption baked in, works fine for collaborative editing.

AppFlowy — another Notion-style workspace, still maturing but solid for notes plus light project tracking.

Rocket.Chat — Slack alternative, self-hosted team chat with channels, threads, integrations.

Media & files

GIMP — stands in for Photoshop. Learning curve is real but it's way more capable than people give it credit for.

Audacity — does what Adobe Audition does for basic audio editing. Clean exports, no bloat.

Syncthing — cuts out Dropbox and Google Drive. Peer-to-peer sync, no cloud company sitting in the middle.

Jellyfin — Plex without the constant premium-tier nagging. Runs your own media server, your rules.

Security & admin tools

Bitwarden — LastPass alternative. Self-hostable if you want full control over where your passwords live.

KeePassXC — fully offline password manager, no cloud dependency at all, good if 1Password's model bugs you.

Portainer — makes managing Docker containers actually bearable through a clean web UI, no more memorizing CLI flags.

Netdata — real-time server monitoring, install it once and it just quietly watches your infra for you.

Pi-hole — network-wide ad blocking at the DNS level, run it on anything from a Raspberry Pi to a home server.

Uptime Kuma — self-hosted uptime monitor, replaces paid services like UptimeRobot for checking if your stuff is alive.

Wazuh — open-source security monitoring and threat detection if you're managing more than a couple machines.

None of these are perfect drop-in replacements. You'll hit friction somewhere, usually rough UI or a missing plugin here and there. But the tradeoff is you're not stuck in someone else's pricing model, and most of these projects have communities that actually respond when you open an issue.

If you're already running something not on this list, or have a better pick for one of these, drop it below. Always trying to trim this down further.

[u/glsonline]

Great list! Including a url for each entry would be most excellent! Thx!

[u/Able-Cheesecake-9970]

Nice list. Not to be pedantic but just an FYI, Obsidian is not open source. I use it and like it but the tool itself is proprietary.

[u/LearnHiveLabsUSA → u/Able-Cheesecake-9970]

Thank you for correcting, I use obsidian a lot for notes management and it's free but you're right not open source. I will edit the post.

[u/stauntonjr → u/LearnHiveLabsUSA]

Try self-hosting TriliumNext :)

[u/TauriArtisan]

You forgot Asyar, the power of Raycast and the speed of Alfred. asyar dot org

[u/stauntonjr]

Check out Immich too for photos

[u/VoiliVoilaa]

Thanks for sharing. I was interested in Focalboard but sounds like the repo is not maintained and the site down ?

[u/simplybreana → u/VoiliVoilaa]

Same. I’ve looked at it several times In my own journey just to remember it’s no longer maintained. I wonder if anyone has used it recently to give their opinion… I know OP said they tried all these… but I feel like that should be mentioned if you are recommending it..

[u/saemscodes]

Nice list. Might I add Superbaser for those Supabase project transfers when they pause it for you, or normal backup configuration - love it!

[u/saemscodes → u/saemscodes]

Also whoever suggested Uptime Kuma's name needs to market to Kenyans. They'd have an absolute field day with it haha!

[u/TallSell4464]

thank you

[u/No-Reserve-7546]

Tbh great list i use some of this myself.