Open-source alternatives guide · Updated 2026
Compare the best free and open-source alternatives to Zapier — 10 verified projects with explicit catalog relationships. Inspect licenses, GitHub activity, self-hosting signals, and migration fit before you switch.
Only explicit alternative relationships are shown—never inferred competitor claims.
This guide compares 10 verified open-source alternatives to Zapier, including [n8n](/projects/n8n), Ghost, Kestra, and ActivePieces.
Projects appear across AI & Machine Learning, Infrastructure, and Content & Collaboration. 3 options include a self-hosting signal — see the self-hosted catalog. Ranking follows public GitHub stars and recorded momentum—not vendor marketing. Compare projects side by side, then confirm license fit, migration effort, and operational ownership before adopting any option.
Strongest repository-activity signal: n8n · Jump to ranking · 198.5K stars · self-hostable
Proprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, repository activity, and self-hosting options befo
Compare capabilities, licensing, and ownership model. Stars help with discovery; they are not a security or product-fit guarantee.
Open-source alternative to Zapier
Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.
Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations. Review the official repository,
Independent technology for modern publishing, memberships, subscriptions and newsletters.
Independent technology for modern publishing, memberships, subscriptions and newsletters. Review the official repository, license, release activity, and deployment documentation be
Open-source alternative to Zapier
Event Driven Orchestration & Scheduling Platform for Mission Critical Applications
Event Driven Orchestration & Scheduling Platform for Mission Critical Applications Review the official repository, license, release activity, and deployment documentation before pr
Open-source alternative to Zapier
AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents
AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents Review the officia
Open-source alternative to Zapier
A browser extension for automating your browser by connecting blocks
A browser extension for automating your browser by connecting blocks Review the official repository, license, release activity, and deployment documentation before production adopt
Open-source alternative to Zapier
Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.
Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Re
Open-source alternative to Zapier
Trigger.dev – build and deploy fully‑managed AI agents and workflows
Trigger.dev – build and deploy fully‑managed AI agents and workflows Review the official repository, license, release activity, and deployment documentation before production adopt
Open-source alternative to Zapier
The open source Zapier alternative. Build workflow automation without spending time and money.
The open source Zapier alternative. Build workflow automation without spending time and money. Review the official repository, license, release activity, and deployment documentati
Open-source alternative to Zapier
Open-source webhook server that helps you provide webhooks to your users. It handles for you a great amount of features that are usually tedious to (re)implement.
Open-source webhook server that helps you provide webhooks to your users. It handles for you a great amount of features that are usually tedious to (re)implement. Review the offici
Open-source alternative to Zapier
Open-source platform that unifies AI agent orchestration and workflow automation — autonomy and precision in one platform.
Open-source platform that unifies AI agent orchestration and workflow automation — autonomy and precision in one platform. Review the official repository, license, release activity
Map must-have capabilitiesList the workflows in Zapier you cannot drop during migration.
Verify the licenseConfirm it fits your use, distribution, and compliance model. Browse license briefs.
Run a proof of conceptTest real data, integrations, clients, and failure modes. Use Compare for side-by-side checks.
Plan ownershipAssess upgrades, backups, support, and an exit path. Read when self-hosting is worth it.
OpenSourceChoice currently lists 10 projects with an explicit alternative relationship to Zapier. Catalog highlights include [n8n](/projects/n8n), Ghost, and Kestra. Rankings follow public GitHub stars and recorded momentum—not paid placement. Match capabilities and license fit to your workflow before adopting any option.
Most catalogued alternatives publish source under OSI or source-available licenses and are free to inspect. Hosting, commercial support, or cloud model APIs may still cost money. Always read the project license for your use case.
3 options in this list carry a self-hosting signal. Confirm the official install guide, backups, upgrades, and hardening steps before production.
Map must-have Zapier workflows, verify license and compliance fit, run a proof of concept with real data and integrations, then plan ownership for upgrades, backups, support, and an exit path.
Narrow the same alternatives by search, license, tags, or self-hosting signals when you need a tighter shortlist.
Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#
TypeScriptProjects tagged with this topic in the verified catalog.
Github ActionsProjects tagged with this topic in the verified catalog.
JavaScriptProjects tagged with this topic in the verified catalog.
Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.AI-nativeThis project includes AI-native capability signals in the catalog metadata.
ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…Independent technology for modern publishing, memberships, subscriptions and newsletters.
InfrastructureOpen-source projects grouped in this category for discovery and comparison.#JavaScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.
NodeJSProjects tagged with this topic in the verified catalog.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…Event Driven Orchestration & Scheduling Platform for Mission Critical Applications
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#
JavaProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…
United StatesLicense not declaredAI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…A browser extension for automating your browser by connecting blocks
Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.#
VueProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.NodeJSProjects tagged with this topic in the verified catalog.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#
RustProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…Trigger.dev – build and deploy fully‑managed AI agents and workflows
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…The open source Zapier alternative. Build workflow automation without spending time and money.
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#JavaScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.NodeJSProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…Open-source webhook server that helps you provide webhooks to your users. It handles for you a great amount of features that are usually tedious to (re)implement.
InfrastructureOpen-source projects grouped in this category for discovery and comparison.#RustProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.NodeJSProjects tagged with this topic in the verified catalog.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…Open-source platform that unifies AI agent orchestration and workflow automation — autonomy and precision in one platform.
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#JavaProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.AI-nativeThis project includes AI-native capability signals in the catalog metadata.ZapierProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…
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