9 free GitHub repos that replace paid software, and the catch on each
9 open source projects on GitHub that replace paid tools like Notion, Asana, Calendly and Loom, and the catch to know before you install each one.
2:57Free lesson
The 9 repos
Repo details checked October 2026. Licenses and pricing change, so check each project before you install it.
| Repo | Instead of | The catch | License |
|---|---|---|---|
| Open Higgsfield AI | Higgsfield | Big cloud models run through a paid service (Muapi). You pay per image or video. | MIT |
| VoiceStudio | ElevenLabs | Clone a voice only with the owner's permission. | AGPL-3.0 |
| OpenSEO | Semrush | The SEO data comes from DataForSEO. You pay for what you pull. | MIT |
| AppFlowy | Notion | Free self-hosting covers 1 user seat. A team pays per seat. | AGPL-3.0 |
| OpenWhispr | Wispr Flow | Not much of one. Free for commercial use on Windows, Mac and Linux. | MIT |
| OpenProject | Asana | Some add-ons are Enterprise only. Someone has to run the server. | GPL-3.0 |
| Cal.diy | Calendly | Its own README recommends it for personal, non-production use only. | MIT |
| Chatwoot | Intercom | The AI agent, and roles and permissions, come with the paid plans. | MIT (core) |
| Cap | Loom | Host it yourself, and you store every video. | AGPL-3.0 (most) |
Transcript
Here are 9 free GitHub projects that replace software you pay for every month. What each one replaces, and the catch. Because free always has a catch.
Number 1. Open Higgsfield AI. An image and video studio like Higgsfield, with hundreds of models in one app. The catch: big models like Kling and Midjourney run through a paid service, so you pay per image or video.
Number 2. VoiceStudio. Voice cloning like ElevenLabs, running fully on your own computer. No account, no API key. Write a training script once, get narration in more than one language. The catch: clone a voice only with the owner's permission.
Number 3. OpenSEO. Rank tracking, backlinks and site audits, without a Semrush subscription. The catch: the data comes from a service called DataForSEO, and you pay for what you pull.
Number 4. AppFlowy. Docs, wikis and tasks like Notion, with your data under your control. The catch: free self-hosting covers 1 user seat. Put your team on it, and you are paying per seat again.
Number 5. OpenWhispr. You talk, it types. Dictation like Wispr Flow, with local Whisper models, so it works offline. Picture a project manager talking through the daily log right after the site walk. The catch? There is not much of one. Free for commercial use, on Windows, Mac and Linux.
Number 6. OpenProject. Projects, Gantt charts and time tracking, everything you use Asana for. If you run an engineering firm or a construction company, start here. The catch: some add-ons are Enterprise only, and someone has to run the server.
Number 7. Cal.diy, the open source edition of Cal.com. Your own Calendly, synced with Google and Outlook. The catch, and it is a big one: its own README recommends it for personal, non-production use only. For a business, use the paid Cal.com.
Number 8. Chatwoot. Website chat, email and WhatsApp in 1 inbox, instead of Intercom. The catch: the AI agent, and roles and permissions, come with the paid plans.
Number 9. Cap, the open source Loom. Record your screen, share a link. Record a process once, and stop explaining it 10 times. The catch: host it yourself, and you are storing every video.
See the pattern? Free to download is not free to run. Somebody has to install it, host it, secure it, back it up, and connect it to the CRM and accounting software you already use. That's the part I do. If one of these caught your eye, go to turbineai.co and tell me what eats the most time in your week.