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Self-hosted alternatives

Open source alternatives to Zapier

Zapier is a hosted automation service that charges by task when one app triggers another.

Original introduction

Zapier counts usage in tasks, and its Free plan includes 100 tasks per month, so anything beyond that needs a paid plan. Teams that self-host their workflows pay for a server instead. Of the five projects listed, the most starred of them is source-available under the Sustainable Use License, which is why it does not count toward the open source minimum. Read that licence before you build on it. The other four use OSI licences. Pricing as of 15 Oct 2026.

Published by Zapier. The projects below are sorted by GitHub stars. Star counts and last commit dates are read from the public GitHub API. The line under each name is generated from the category, the licence, and whether the project can be self-hosted. Fetched . 4 of 5 have an OSI-approved SPDX licence, a commit in the last 12 months, and a repository GitHub has not archived.

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  1. 1n8n

    n8n-io/n8n

    Forms, email, and automation. Licence: Source-available (Sustainable Use License). Self-hosted: yes.

    Licence
    Source-available (Sustainable Use License)
    GitHub stars
    207,417
    Last commit

    Does not count toward the open source minimum: Source-available (Sustainable Use License).

    Repository on GitHubProject site

  2. 2Huginn

    huginn/huginn

    Forms, email, and automation. Licence: MIT. Self-hosted: yes.

    Licence
    MIT
    GitHub stars
    50,058
    Last commit

    Counts as open source: OSI-approved licence, commit within 12 months, and the repository is not archived.

    Repository on GitHub

  3. 3Activepieces

    activepieces/activepieces

    Forms, email, and automation. Licence: MIT. Self-hosted: yes.

    Licence
    MITOpen core
    GitHub stars
    25,058
    Last commit

    Counts as open source: OSI-approved licence, commit within 12 months, and the repository is not archived.

    Repository on GitHubProject site

  4. 4Node-RED

    node-red/node-red

    Forms, email, and automation. Licence: Apache-2.0. Self-hosted: yes.

    Licence
    Apache-2.0
    GitHub stars
    23,745
    Last commit

    Counts as open source: OSI-approved licence, commit within 12 months, and the repository is not archived.

    Repository on GitHubProject site

  5. 5Automatisch

    automatisch/automatisch

    Forms, email, and automation. Licence: AGPL-3.0-only. Self-hosted: yes.

    Licence
    AGPL-3.0-onlyOpen core
    GitHub stars
    13,996
    Last commit

    Counts as open source: OSI-approved licence, commit within 12 months, and the repository is not archived.

    Repository on GitHubProject site

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