If you’re looking to move off Zapier, you have options. Real ones. Here are the 4 open-source, self-hostable alternatives I’ve tested, with honest notes on what each does well and where each falls short.
Why leave Zapier?
- Per-task billing gets expensive with any real automation volume.
- API access limited unless on high-tier plans.
- Every workflow depends on Zapier being up — no offline fallback.
The 4 best self-hosted alternatives to Zapier
n8n
The Zapier of self-hosted. Node-based visual editor, 400+ integrations, generous free tier.
Visit n8n website →Node-RED
Older, more code-focused. Popular for IoT / Home Assistant integrations.
Visit Node-RED website →Activepieces
Newer entrant. Cleaner UI than n8n. Smaller integration library so far.
Visit Activepieces website →Huginn
Old-guard automation via “agents.” No visual editor. Powerful if you like Ruby.
Visit Huginn website →Quick comparison
| Alternative | Difficulty | License |
|---|---|---|
| n8n | Easy | Fair-code (sustainable use) |
| Node-RED | Medium | Apache-2.0 |
| Activepieces | Easy | MIT (community) |
| Huginn | Hard | MIT |
Frequently asked questions
Is there a free alternative to Zapier?
Yes. Every tool listed above is free and open source. Some, like n8n, also have optional paid hosted tiers if you don’t want to run the server yourself. Everything else is genuinely free to self-host — you pay only for your own hardware and time.
Which one should I pick if I’ve never self-hosted anything before?
Start with n8n. It’s the lowest-friction option here — realistic to have running in an afternoon on a small server or Raspberry Pi. If it doesn’t fit your workflow, Node-RED is a good second try.
Can I run these on a Raspberry Pi?
Most of them, yes — the tools marked Easy here will comfortably run on a Pi 4 or Pi 5 with 4GB+ of RAM. The Medium tools may work but appreciate a mini PC or a spare desktop. Hard-tagged tools generally want real server hardware.
What about mobile apps?
It varies. Tools like Vaultwarden and Immich have native iOS/Android apps that connect to your server. Others rely on the web UI through your phone browser — fine for occasional use, not a full app experience.