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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
1Retool logoRetoolFree plan + paidNoWeb, iOS, Android +14 of 466.5
2OutSystems logoOutSystemsPaidNoWeb, iOS, Android3 of 357.2
  1. Retool logo

    1. RetoolTop pick

    Best for: Engineering-led teams building many internal tools on top of production databases and APIs

    Free plan + paidSelf-hostableWeb, iOS, Android, Self-hosted

    66.5

    score / 100

    Why switch from Superblocks

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

    Pros

    • Connects to almost any database or API
    • Large component library with SQL and JavaScript everywhere
    • Cloud, self-hosted and air-gapped deployment options

    Cons

    • Per-user pricing gets expensive as usage spreads
    • Needs developers comfortable with SQL and JavaScript
    • Closed source, so you depend on Retool's roadmap
    Visit Retool Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    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 Retool a good Superblocks alternative?

    Verified facts

    4 of 4 verified
    Free plan
    $0 per builder
    Checked Oct 25, 2026retool.com(opens source in a new tab)
    Builder pricing
    $10 (Team) / $50 (Business) per builder/month
    Checked Oct 25, 2026retool.com(opens source in a new tab)
    Internal user pricing
    $5 (Team) / $15 (Business) per user/month
    Checked Oct 25, 2026retool.com(opens source in a new tab)
    Self-hosting
    Self-hosted or air-gapped
    Checked Oct 25, 2026retool.com(opens source in a new tab)
  2. OutSystems logo

    2. OutSystems

    Best for: Large enterprises building and maintaining many business-critical apps with in-house developers

    PaidWeb, iOS, Android

    57.2

    score / 100

    Why switch from Superblocks

    Full enterprise low-code platform for larger application portfolios.

    Pros

    • Scales to large, business-critical applications
    • Flexible deployment, including on-premises and sovereign cloud
    • Free Personal Edition for learning

    Cons

    • Quote-based pricing that is expensive for small teams
    • Requires trained developers
    • Significant platform lock-in
    Visit OutSystems Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    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 OutSystems a good Superblocks alternative?

    Verified facts

    3 of 3 verified
    Personal Edition
    Free
    Checked Oct 25, 2026outsystems.com(opens source in a new tab)
    End users
    Starts with 100 internal users
    Checked Oct 25, 2026outsystems.com(opens source in a new tab)
    Deployment
    Cloud, on-premises, private or sovereign cloud
    Checked Oct 25, 2026outsystems.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.