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Superblocks alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Superblocks: no free plan, only a trial, and enterprise focus and pricing can be heavy for small teams. We ranked 5 alternatives by how directly each one replaces Superblocks, then by reviews, real visits and how recently each app's facts were checked against its own website. Retool currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1ToolJet logoToolJetOpen sourceYesWeb, Self-hosted4 of 462.6
2Appsmith logoAppsmithOpen sourceYesWeb, Self-hosted4 of 455.3
  1. ToolJet logo

    1. ToolJetTop pick

    Best for: Teams that want an open-source Retool alternative with AI-assisted app building

    Open sourceSelf-hostableWeb, Self-hosted

    62.6

    score / 100

    Why switch from Superblocks

    Open-source option with AI app generation and self-hosting.

    Pros

    • AI builder can generate apps from a prompt
    • Open-source edition is self-hostable
    • Built-in database and workflows

    Cons

    • Paid plans cap end users and apps
    • Per-builder price rises steeply on higher tiers
    • AGPL licence may concern some companies
    Visit ToolJet Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is ToolJet a good Superblocks alternative?

    Verified facts

    4 of 4 verified
    Free plan
    $0 per builder/month
    Checked Oct 25, 2026tooljet.com(opens source in a new tab)
    Pro plan
    $79 per builder/month
    Checked Oct 25, 2026tooljet.com(opens source in a new tab)
    License
    AGPL-3.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Self-hosting
    Docker, Kubernetes, VPC or on-premise
    Checked Oct 25, 2026tooljet.com(opens source in a new tab)
  2. Appsmith logo

    2. Appsmith

    Best for: Developer teams that want a Retool-style builder they can self-host for free

    Open sourceSelf-hostableWeb, Self-hosted

    55.3

    score / 100

    Why switch from Superblocks

    Free self-hosted alternative for developer-built tools.

    Pros

    • Apache-licensed and free to self-host
    • Git-based version control for apps
    • Connects to common databases and any REST or GraphQL API

    Cons

    • Fewer and less polished components than Retool
    • SSO and audit features need paid plans
    • Large apps can feel sluggish
    Visit Appsmith Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Appsmith a good Superblocks alternative?

    Verified facts

    4 of 4 verified
    Free plan
    Up to 5 users on cloud
    Checked Oct 25, 2026appsmith.com(opens source in a new tab)
    Business plan
    $15 per user/month
    Checked Oct 25, 2026appsmith.com(opens source in a new tab)
    License
    Apache-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Community edition
    Free, open source
    Checked Oct 25, 2026appsmith.com(opens source in a new tab)

The best Superblocks alternative for…

The highest-ranked app in this list for each need.

Retool logo

Best Superblocks alternative for most people

Retool

The market leader, with a free plan and a huge connector library.

ToolJet logo

Best Superblocks alternative for a free option

ToolJet

Open-source option with AI app generation and self-hosting.

UI Bakery logo

Best Superblocks alternative for a free plan you can upgrade

UI Bakery

Lower-cost builder that also offers self-hosted deployment.

Appsmith logo

Best Superblocks alternative for open source

Appsmith

Free self-hosted alternative for developer-built tools.

Retool logo

Best Superblocks alternative for self-hosting

Retool

The market leader, with a free plan and a huge connector library.

OutSystems logo

Best Superblocks alternative for iPhone and Android

OutSystems

Full enterprise low-code platform for larger application portfolios.

Retool logo

Best Superblocks alternative for working in the browser

Retool

The market leader, with a free plan and a huge connector library.

Superblocks alternatives: common questions

What is the best alternative to Superblocks?

Retool ranks first right now. The market leader, with a free plan and a huge connector library. ToolJet and UI Bakery follow it in our ranking.

Is there a free alternative to Superblocks?

Yes. Retool (free plan + paid), ToolJet (open source), UI Bakery (free plan + paid) and Appsmith (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Superblocks?

Yes: ToolJet and Appsmith. ToolJet and Appsmith can also be self-hosted.

Why do people switch from Superblocks?

The complaints we hear most: no free plan, only a trial; enterprise focus and pricing can be heavy for small teams; results depend on the AI agent's fit for your systems.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Superblocks, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.