replacing Zapier
No-code workflow automation between apps — Zapier pricing: $29.99-$103.50/month. Below: 4 free, self-hostable open source projects that cover the same ground, ranked by real GitHub adoption.
There are 4 open source Zapier alternatives tracked on this registry, against Zapier pricing of $29.99-$103.50/month. The most-adopted is n8n with 209,375 GitHub stars, written in TypeScript. Together the set has 267,085 stars across 3 languages and 0 licences. All 4 are free to self-host with no licence fee, and 3 of 4 received a commit in the last 90 days. 4 head-to-head Zapier comparisons are available.
n8n is a visual workflow automation platform built in TypeScript that combines a drag-and-drop editor with custom code execution. It lives in the integration and automation ecosystem, positioned as an open alternative to proprietary services like Zapier. Users design multi-step workflows—called “n8n flows”—that connect apps, services, and custom logic to automate repetitive tasks.
NOASSERTION · TypeScript · Zapier vs n8n →
ActivePieces describes itself as an open source replacement for Zapier. It is an all-in-one AI automation platform built around an extensible, type-safe "pieces" framework written in TypeScript, where a piece is the unit of integration — one connector to one service. Pieces are npm packages, so the project lives squarely in the JavaScript and TypeScript ecosystem, and its integration source code ships as versioned packages published to npmjs.com. The platform pairs that developer-facing framework with a no-code builder, so people who do not write code can assemble the same pieces into working flows.
NOASSERTION · TypeScript · Zapier vs ActivePieces →
Windmill is an open-source developer platform for internal code, including APIs, background jobs, workflows, and UIs. It lives in the self-hostable low-code automation ecosystem and supports Python, TypeScript, Go, Bash, SQL, GraphQL, PowerShell, Rust, and more. The project is positioned as an open-source alternative to Zapier and, in the README, to Retool, Pipedream, Superblocks, and a simplified Temporal.
NOASSERTION · Rust · Zapier vs Windmill →
Visual workflow automation with code flexibility and AI agents
Automate workflows with no-code integration platform
Open-source workflow automation for developers
Open-source integration platform for seamless workflows
last updated nightly · ranking method: github stars, live-tracked
n8n is the most-starred open source alternative to Zapier in this registry, with 209,375 GitHub stars. 4 alternatives are compared here in total.
Yes. Every project listed on this page is open source and free to self-host — there is no licence fee. Some projects also sell a managed hosted version, but the self-hosted path costs nothing.
Compare licence terms, community size (stars), primary language and release activity. A fast-moving project with a compatible licence and an active maintainer base matters more than raw star count when you are committing to a migration.