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Base44 alternatives · App Builders

Open-source alternatives to Base44

Base44 is not described as open source on its own site. 6 of the 89 other AI app builders in this directory are open source, according to their own sites.

Base44 has a free plan. Paid plans start at $16 per month, billed annually (Starter). All of them are free or have a free plan.

6 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

How each one differs from Base44

  1. Dyad

    Open-source desktop app that builds web apps with AI, locally

    • Dyad starts at $20 per month (Dyad Pro). Base44 starts at $16 per month, billed annually (Starter).
    • Only Dyad lists macOS, Windows and Linux apps.
    • Only Base44 lists a web app.
    • Only Base44 lists iOS and Android apps.
    Dyad pricing and details

  2. Leap

    AI agent that builds backend-heavy apps and deploys to your cloud

    • Leap starts at $30 per month for 100 credits. Base44 starts at $16 per month, billed annually (Starter).
    • Only Base44 lists iOS and Android apps.
    • Leap is open source, according to its own site.
    • Leap also covers AI agents.
    Leap pricing and details

  3. Appsmith

    Open-source low-code platform for internal apps

    • Appsmith starts at $15 per user / month. Base44 starts at $16 per month, billed annually (Starter).
    • Only Base44 lists iOS and Android apps.
    • Appsmith is open source and self-hostable, according to its own site.
    • Base44 also covers no-code.
    Appsmith pricing and details

  4. Budibase

    Open-source platform for internal apps, automations and AI agents

    • Budibase starts at $299 per month and up (Budibase Cloud, billing basis not shown). Base44 starts at $16 per month, billed annually (Starter).
    • Only Base44 lists iOS and Android apps.
    • Budibase is open source and self-hostable, according to its own site.
    • Budibase also covers workflow automation and AI agents.
    Budibase pricing and details

  5. ToolJet

    Low-code platform for internal tools, workflows and AI agents

    • ToolJet starts at $23 per builder / month, billed annually ($29 billed monthly). Base44 starts at $16 per month, billed annually (Starter).
    • Only Base44 lists iOS and Android apps.
    • ToolJet is open source and self-hostable, according to its own site.
    • ToolJet also covers databases, workflow automation and AI agents.
    ToolJet pricing and details

  6. Mage

    Free generator that turns a description into a Wasp web app

    • Mage is free. Base44 starts at $16 per month, billed annually (Starter).
    • Only Base44 lists iOS and Android apps.
    • Mage is open source, according to its own site.
    • Base44 also covers no-code.
    Mage pricing and details

Common questions

Is there an open-source alternative to Base44?

Yes. Dyad, Leap, Appsmith, Budibase, ToolJet and Mage are open source, according to their own sites.

Is Base44 open source?

Base44 is not described as open source on its own site. The listing was checked on Oct 5, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Base44: the alternatives its listing names first, then the tools that share the most features with it.