Best Open-Source Zapier Alternatives (2026)

15 self-hostable, open-source projects that replace Zapier — without per-task billing that punishes scale. Each is scored for how hard it is to self-host, with one-click deploy options where they exist.

Zapier bills per task, so a single workflow that fans out across hundreds of records can burn your monthly quota in one run, and costs scale with success rather than value. Heavy users also hit the ceiling on multi-step logic, custom code, and data residency that self-hosting solves outright.

Our picks at a glance

Easiest to self-host

n8n

Difficulty 2/5 with a One-Click deploy option and 400+ integrations, the lowest-friction full Zapier replacement here.

Most powerful

n8n

400+ integrations plus native AI nodes and custom-code support cover the widest range of real automation work.

Most active

n8n

At 115,000 stars it has by far the most momentum of any option on the list.

Best managed option

n8n

Offers official managed hosting (n8n Cloud) so you can start without running infrastructure, then self-host later.

Compare all 15 alternatives

Tap a column header to sort

Project			Deploy	License
n8n Sponsored TypeScript	193k ★	2/5 Easy	One-Click Docker +3	Sustainable Use License	2 days ago	Repo
changedetection.io Python	32k ★	2/5 Easy	Docker Docker Compose +1	Apache-2.0	2 days ago	Repo
Kestra Java	27k ★	3/5 Moderate	Docker Docker Compose +2	Apache-2.0	2 days ago	Repo
Node-RED JavaScript	23k ★	2/5 Easy	Docker Docker Compose +1	Apache-2.0	2 days ago	Repo
Activepieces TypeScript	23k ★	3/5 Moderate	Docker Docker Compose +2	MIT	2 days ago	Repo
Leon Nodejs	17k ★	4/5 Involved	Manual	MIT	13 days ago	Repo
Windmill Rust	17k ★	3/5 Moderate	Docker Docker Compose +2	AGPL-3.0	2 days ago	Repo
Automatisch JavaScript	14k ★	3/5 Moderate	Docker Docker Compose +1	AGPL-3.0	4 months ago	Repo
StackStorm Python	6.5k ★	5/5 Advanced	Docker Compose Kubernetes +1	Apache-2.0	4 months ago	Repo
Cronicle Nodejs	5.7k ★	3/5 Moderate	Docker Manual	MIT	6 days ago	Repo
pyLoad Python	3.8k ★	2/5 Easy	Docker Manual	AGPL-3.0	14 days ago	Repo
OliveTin Go	3.6k ★	2/5 Easy	Docker Manual	AGPL-3.0	2 days ago	Repo
Dagu Go	3.5k ★	2/5 Easy	Docker Manual	GPL-3.0	2 days ago	Repo
Dittofeed Docker	2.8k ★	3/5 Moderate	Docker Docker Compose	MIT	2 months ago	Repo
Matchering Docker	2.6k ★	3/5 Moderate	Docker Manual	GPL-3.0	1 month ago	Repo

What to look for: Look for breadth of pre-built integrations so you are not hand-rolling every API call, plus a clear path to add custom code or HTTP nodes for the apps that aren't covered. Confirm the license actually permits your use case (n8n's Sustainable Use License restricts reselling the product) and that the deploy story matches your ops maturity.

Head-to-head:n8n vs Zapier changedetection.io vs Zapier Kestra vs Zapier Node-RED vs Zapier Activepieces vs Zapier

The alternatives, reviewed

#1
n8n
Sponsored
Self-host: Easy
Fair-code workflow automation with 400+ integrations and native AI nodes
193k TypeScript Sustainable Use License 2 days ago
How it compares to Zapier
Source-available (Sustainable Use License), not true OSI open source; some enterprise features (SSO, log streaming, external secrets) are gated behind paid tiers.

Self-hosted instances require you to manage your own queue/Redis and Postgres for scaling and reliability.

Far fewer pre-built app connectors than Zapier's 6,000+ catalog.

Concurrency and execution throughput on the free self-hosted tier require manual queue-mode tuning.
Repo Details & deploy →
#2
changedetection.io
Self-host: Easy
Monitor any website for changes and get notified instantly
32k Python Apache-2.0 2 days ago
How it compares to Zapier
No multi-step workflow automation — it only watches and notifies, not acts on changes

JavaScript-heavy sites require a separately configured Playwright browser container

No native API for programmatic watch management (REST API is limited)

Cannot extract and transform data into downstream systems without additional tools
Repo Details & deploy →
#3
Kestra
Self-host: Moderate
Event-driven orchestration platform for scheduled and API-triggered workflows
27k Java Apache-2.0 2 days ago
How it compares to Zapier
YAML-declarative workflows are more engineering-oriented than no-code Zapier flows.

Enterprise edition gates SSO, RBAC, multi-tenancy, audit logs, and worker isolation.

Connectors are plugins focused on data/infra systems rather than consumer SaaS apps.

Production self-hosting benefits from Postgres plus a queue, raising operational overhead.
Repo Details & deploy →
#4
Node-RED
Self-host: Easy
Flow-based low-code programming for wiring together APIs, services, and devices
23k JavaScript Apache-2.0 2 days ago
How it compares to Zapier
Not a polished SaaS-connector product; you assemble flows from lower-level nodes rather than pre-built app triggers.

No built-in multi-tenant team management, SSO, or audit logging out of the box.

Authentication and HTTPS for production exposure must be configured manually.

Geared toward IoT/event wiring, so common SaaS app integrations often need community nodes of varying quality.
Repo Details & deploy →
#5
Activepieces
Self-host: Moderate
MIT-licensed no-code automation and AI agents builder, an open Zapier alternative
23k TypeScript MIT 2 days ago
How it compares to Zapier
Smaller connector catalog than Zapier/Make; many niche apps still missing.

Enterprise features (SSO, audit logs, projects/RBAC, embedding) require the paid edition.

Self-hosting needs Postgres and Redis, so it is not a single-container setup.

Younger ecosystem means fewer pre-built templates and community examples.
Repo Details & deploy →
#6
Leon
Self-host: Involved
Open-source personal assistant server you fully control and run on your own machine
17k Nodejs MIT 13 days ago
How it compares to Zapier
Skill catalog is far smaller than Alexa's or Google Assistant's third-party ecosystem

No official Docker image; setup involves Node.js, Python, and optional model downloads

Voice accuracy depends on local NLU models that require additional setup and tuning

Not designed for multi-user household scenarios — user accounts and permissions are limited
Repo Details & deploy →
#7
Windmill
Self-host: Moderate
Developer platform to turn scripts into workflows and internal apps
17k Rust AGPL-3.0 2 days ago
How it compares to Zapier
Code-first approach is more developer-oriented than Zapier's pure no-code experience.

AGPL plus a separate enterprise edition; some features (distributed workers at scale, SSO, audit) are gated.

Fewer turnkey SaaS connectors; you often write the integration glue yourself.

Self-hosting requires Postgres and worker configuration for real workloads.
Repo Details & deploy →
#8
Automatisch
Self-host: Moderate
Open-source business automation, a self-hostable Zapier alternative
14k JavaScript AGPL-3.0 4 months ago
How it compares to Zapier
Significantly fewer integrations than Zapier or even n8n.

Slower release cadence; development activity is lighter than the larger competitors.

No native code/function step comparable to n8n or Windmill for custom logic.

Self-hosting needs Postgres and Redis; not a single-container deploy.
Repo Details & deploy →
#9
StackStorm
Self-host: Advanced
Event-driven automation and auto-remediation platform (IFTTT for ops)
6.5k Python Apache-2.0 4 months ago
How it compares to Zapier
Complex multi-component architecture (RabbitMQ, MongoDB, multiple services); steep to install and operate.

Ops-focused rather than a business-friendly no-code iPaaS; not aimed at marketing/sales automations.

Workflow authoring uses YAML/Orquesta, which is more technical than visual builders.

Smaller community and slower momentum than n8n or modern alternatives.
Repo Details & deploy →
#10
Cronicle
Self-host: Moderate
Distributed task scheduler with a web UI — cron for teams with history and retries
5.7k Nodejs MIT 6 days ago
How it compares to Zapier
No DAG / dependency graph between jobs; pipeline orchestration is limited to linear chains

No built-in secrets management — credentials passed as environment variables or shell scripts

High-availability multi-master setup is complex and not well documented

UI and architecture feel dated compared to newer alternatives like Temporal or Windmill
Repo Details & deploy →
#11
pyLoad
Self-host: Easy
Web-controlled download manager for one-click hosters, torrents, and direct links
3.8k Python AGPL-3.0 14 days ago
How it compares to Zapier
Plugin ecosystem for one-click hosters is aging; many premium hoster plugins are broken or unmaintained

No built-in torrent client — only handles direct and hoster-based downloads

Web UI is functional but dated compared to modern download manager frontends

Python 3 migration improved stability but the codebase has accumulated technical debt
Repo Details & deploy →
#12
OliveTin
Self-host: Easy
Expose predefined Linux shell commands as a safe, simple web interface for non-techies
3.6k Go AGPL-3.0 2 days ago
How it compares to Zapier
No conditional logic, branching, or multi-step workflows — each button maps to a single command

No scheduling or trigger-based execution; only manual button presses

Authentication is basic (single shared password or reverse-proxy auth); no per-user RBAC

No audit log or notification system beyond live output in the UI
Repo Details & deploy →
#13
Dagu
Self-host: Easy
DAG-based workflow orchestrator with a web UI — cron replacement with real dependencies
3.5k Go GPL-3.0 2 days ago
How it compares to Zapier
No distributed worker pool — all steps run on the same host, limiting horizontal scale

No built-in secrets vault; credentials must be managed via environment variables or external tools

UI is functional but lacks advanced features like parameterized run forms or dynamic DAG generation

Community is smaller than Airflow or Prefect; fewer integrations and plugins
Repo Details & deploy →
#14
Dittofeed
Self-host: Moderate
Open-source customer messaging automation — email, SMS, and push journey builder
2.8k Docker MIT 2 months ago
How it compares to Zapier
In-app messaging channel (tooltips, banners, modals) is not yet supported

Deliverability tools like dedicated IP warm-up and domain authentication wizards are absent

Mobile push requires manual integration with APNs/FCM; no managed SDK

Feature cadence for the self-hosted version can lag behind the cloud offering
Repo Details & deploy →
#15
Matchering
Self-host: Moderate
Automated audio mastering library that matches your track to a reference song
2.6k Docker GPL-3.0 1 month ago
How it compares to Zapier
Mastering quality depends entirely on reference track choice; no AI-driven style presets like LANDR

No stem separation, noise reduction, or restoration processing

Web UI is very minimal — not a polished production tool without custom frontend work

Processing is CPU-only by default; no GPU acceleration for batch workflows
Repo Details & deploy →

The verdict

n8n is the default answer for most teams leaving Zapier: easiest to stand up, the most integrations, native AI nodes, and an official cloud tier if you don't want to run it yourself. Pick Activepieces instead if a permissive MIT license matters more to you than raw integration count.

Still deciding? Compare n8n vs changedetection.io side by side →

Zapier alternatives — frequently asked questions

Is there a free self-hosted alternative to Zapier?

Yes. n8n, Activepieces (MIT), Node-RED (Apache-2.0), Windmill, and Automatisch are all free to self-host. Activepieces and Node-RED carry the most permissive licenses; n8n uses a Sustainable Use License that is free for internal use but restricts reselling it as a competing product.

Which Zapier alternative is easiest to self-host?

n8n and Node-RED are both rated 2/5 difficulty. n8n additionally offers a One-Click deploy and an official managed cloud, making it the lowest-effort path to a working instance.

Which has the most integrations like Zapier?

n8n ships 400+ integrations plus native AI nodes, the broadest catalog among these options. For apps not covered, all of these tools let you call arbitrary HTTP APIs or write custom code.

Can I avoid per-task billing entirely?

Yes. When you self-host any of these on your own server, you pay for the server, not per task or per execution. That is the core reason teams move off Zapier's per-task model.

I'm an ops/SRE team, not a marketing team. What fits better?

StackStorm (Apache-2.0) is purpose-built for event-driven auto-remediation and infrastructure automation rather than SaaS app connectors. It is the most powerful for ops use cases but also the hardest to run at 5/5 difficulty.

Does n8n require me to know how to code?

No. n8n is visual and low-code for the common cases, with optional code nodes when you need them. Node-RED and Activepieces are similarly low-code; Windmill leans more toward developers turning scripts into workflows.

Keep exploring

All Automation & iPaaS →Self-hosted directory →Easiest to self-host →

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