Open Source and Fair-Code Zapier Alternatives: 4 Tools You Can Deploy in One Click
Niklas KarolyFounder Nodion
In short
- n8n, Activepieces, Automatisch and Huginn are four Zapier alternatives you can run as your own instance.
- n8n combines a visual editor with code steps, but it is fair-code under the Sustainable Use License, not open source by the OSI definition.
- Activepieces (MIT) and Automatisch (AGPL-3.0) are open source no-code builders; Huginn (MIT) runs agents that watch the web and act on events.
- All four are in the one-click catalog: Nodion creates the app together with the database and other resources it needs.
Zapier made workflow automation mainstream: connect two apps, define a trigger and let the service move the data. Once automations become central to how a business runs, three questions matter more: where workflow data and credentials live, whether you can run your own code, and what every additional task costs.
Open source and fair-code tools answer all three. You run your own instance, keep the data in it and pay for the resources it uses instead of per task. Here are four options from the Nodion one-click catalog, plus two more worth knowing.
At a glance
| Tool | Best for | License | Runs with |
|---|---|---|---|
| n8n | Technical teams that want visual flows plus code | Sustainable Use License (fair-code) | PostgreSQL, volume |
| Activepieces | No-code users coming from Zapier | MIT, enterprise parts separate | PostgreSQL with pgvector, Valkey, object storage |
| Automatisch | Simple flows under a strict open source license | AGPL-3.0 | PostgreSQL, Valkey |
| Huginn | Agents that watch websites and feeds | MIT | MySQL |
How we picked
- Covers Zapier's core idea: triggers, actions and multi-step workflows.
- Runs as your own instance from a container image with a standard database.
- Public source code under an open source or fair-code license.
- Actively maintained with regular releases.
1. n8n
n8n is a node-based workflow editor. Every step is a node on a canvas, and whenever a built-in integration is not enough, a Code node lets you write JavaScript or Python. Nodes for AI agents and LLM calls make it popular with technical teams that build automations around language models.
License: n8n is fair-code, not open source by the OSI definition. The Sustainable Use License lets you use and modify n8n for your own internal business or personal use, but not offer it to others as a commercial service. Enterprise features use a separate license. License file, project site.
On Nodion: the preset creates the n8n app, a PostgreSQL database, a 10 GB volume for n8n's files and a generated encryption key. n8n needs at least 2 GB of memory. Step by step: How to deploy n8n in one click.
2. Activepieces
Activepieces is the closest to Zapier in look and feel: a clean no-code builder in which every step is a "piece". Pieces are written in TypeScript and most of them come from the community, so developers can add their own integration without forking the product.
License: MIT for the community edition. Code in the enterprise directories uses a separate license. License file, project site.
On Nodion: the preset runs a web and a worker process with PostgreSQL (pgvector), Valkey as the queue, an object storage bucket for files and a cache volume. Code steps run in a sandbox.
3. Automatisch
Automatisch calls itself the open source Zapier alternative and keeps things simple: a trigger, a few actions, done. That focus makes it quick to learn. Check its list of supported apps for the services you need before you switch.
License: AGPL-3.0, the strongest copyleft license in this list. License file, project site.
On Nodion: web and worker processes with PostgreSQL, Valkey and a storage volume. The first sign-in uses the sample credentials from the Automatisch docs (user@automatisch.io / sample). Log in and change both right after the first deploy, before you share the URL: until then, anyone who knows the defaults can sign in.
4. Huginn
Huginn is the veteran of the list. Instead of app-to-app flows, you build agents that watch websites, RSS feeds or APIs, create events and act on them: send a digest, call a webhook or hand the event to the next agent. It is a hackable take on IFTTT and Zapier that gives you much more control over each step.
License: MIT. License file, project site.
On Nodion: one web process with MySQL. You sign in as admin with the password that Nodion generates as SEED_PASSWORD on the app's Environment tab.
Also worth a look
- Langflow (MIT) is a visual builder for AI agents and RAG pipelines. It fits better than the tools above when your workflows are mostly LLM calls, and it is in the one-click catalog too.
- Node-RED (Apache 2.0) brings flow-based programming from the IoT world and is strong for device and message flows.
How to choose
- You want the most power and code steps: n8n, as long as its fair-code license fits how you use it.
- You want a Zapier-like no-code builder under the MIT license: Activepieces.
- You need a strict open source license and simple flows: Automatisch.
- You want to monitor the web and react to changes: Huginn.
Each of them runs on Nodion as your own instance in the region you pick, with the database and, where the tool needs them, cache or storage created for you. Browse all apps in the one-click catalog.
Frequently asked questions
What is the best open source alternative to Zapier?
Under an OSI open source license, Activepieces (MIT) is closest to Zapier's no-code builder, and Automatisch (AGPL-3.0) suits simpler flows. n8n has a visual editor with JavaScript and Python Code nodes, but it is fair-code under the Sustainable Use License, not open source.
Is n8n open source?
Not by the OSI definition. n8n is fair-code: the source is public, and you may use and modify it for your own internal business or personal use, but the Sustainable Use License restricts offering n8n to others as a commercial service. Enterprise features use a separate n8n Enterprise License.
Why run your own Zapier alternative?
Workflow data and credentials stay in an instance you control, you can run custom code, and there is no per-task pricing: you pay for the resources the instance uses.
What do these tools need to run?
n8n needs PostgreSQL and a volume. Activepieces needs PostgreSQL with pgvector, Valkey and object storage. Automatisch needs PostgreSQL and Valkey, and Huginn needs MySQL. On Nodion the one-click preset creates these resources for you.