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OutSystems alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave OutSystems: quote-based pricing that is expensive for small teams, and requires trained developers. We ranked 5 alternatives by how directly each one replaces OutSystems, then by reviews, real visits and how recently each app's facts were checked against its own website. Mendix currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Mendix logoMendixFree plan + paidNoWeb, iOS, Android3 of 366.5
2Microsoft Power Apps logoMicrosoft Power AppsPaidNoWeb, Windows, iOS +14 of 462.6
3Retool logoRetoolFree plan + paidNoWeb, iOS, Android +14 of 457.2
  1. Mendix logo

    1. MendixTop pick

    Best for: Enterprises, especially in manufacturing, building governed apps across business and IT

    Free plan + paidWeb, iOS, Android

    66.5

    score / 100

    Why switch from OutSystems

    The closest enterprise rival, with transparent starting prices and a free tier.

    Pros

    • Mature enterprise platform with many deployment options
    • Free tier to learn and prototype
    • Strong business-IT collaboration features

    Cons

    • Paid tiers start at a high monthly cost
    • Pricing beyond the starting points needs a sales quote
    • Needs trained developers for complex apps
    Visit Mendix 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 Mendix a good OutSystems alternative?

    Verified facts

    3 of 3 verified
    Free tier
    $0/month
    Checked Oct 25, 2026mendix.com(opens source in a new tab)
    Standard tier
    From $1,090/month
    Checked Oct 25, 2026mendix.com(opens source in a new tab)
    Premium tier
    Quote on request
    Checked Oct 25, 2026mendix.com(opens source in a new tab)
  2. Microsoft Power Apps logo

    2. Microsoft Power Apps

    Best for: Organisations on Microsoft 365 that want governed business apps built by IT and power users

    PaidWeb, Windows, iOS, Android

    62.6

    score / 100

    Why switch from OutSystems

    Cheaper for Microsoft-centred organisations with simpler apps.

    Pros

    • Deep integration with Microsoft 365, Teams and Dynamics
    • Hundreds of connectors and Dataverse storage
    • Strong governance through Microsoft admin tools

    Cons

    • Licensing is complicated and premium features cost extra
    • Canvas apps can be slow with large data
    • Little appeal outside the Microsoft ecosystem
    Visit Microsoft Power Apps 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 Microsoft Power Apps a good OutSystems alternative?

    Verified facts

    4 of 4 verified
    Premium price
    $20 per user/month, paid yearly
    Checked Oct 25, 2026microsoft.com(opens source in a new tab)
    Volume price
    $12 per user/month with 2,000-seat minimum
    Checked Oct 25, 2026microsoft.com(opens source in a new tab)
    Developer plan
    Free
    Checked Oct 25, 2026microsoft.com(opens source in a new tab)
    Extra database capacity
    $40 per GB/month
    Checked Oct 25, 2026microsoft.com(opens source in a new tab)
  3. Retool logo

    3. Retool

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

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

    57.2

    score / 100

    Why switch from OutSystems

    Faster for developer-built internal tools without a full platform.

    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 ×0.369
    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 Retool a good OutSystems 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)

The best OutSystems alternative for…

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

Mendix logo

Best OutSystems alternative for most people

Mendix

The closest enterprise rival, with transparent starting prices and a free tier.

Oracle APEX logo

Best OutSystems alternative for a free option

Oracle APEX

Low-code on Oracle Database at no extra licence cost.

Retool logo

Best OutSystems alternative for a free plan you can upgrade

Retool

Faster for developer-built internal tools without a full platform.

Retool logo

Best OutSystems alternative for self-hosting

Retool

Faster for developer-built internal tools without a full platform.

Microsoft Power Apps logo

Best OutSystems alternative for Windows

Microsoft Power Apps

Cheaper for Microsoft-centred organisations with simpler apps.

Mendix logo

Best OutSystems alternative for iPhone and Android

Mendix

The closest enterprise rival, with transparent starting prices and a free tier.

Superblocks logo

Best OutSystems alternative for working in the browser

Superblocks

AI-generated internal apps with enterprise governance.

OutSystems alternatives: common questions

What is the best alternative to OutSystems?

Mendix ranks first right now. The closest enterprise rival, with transparent starting prices and a free tier. Microsoft Power Apps and Retool follow it in our ranking.

Is there a free alternative to OutSystems?

Yes. Mendix (free plan + paid), Retool (free plan + paid) and Oracle APEX (free) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to OutSystems?

None of the 5 alternatives in this list is open source.

Why do people switch from OutSystems?

The complaints we hear most: quote-based pricing that is expensive for small teams; requires trained developers; significant platform lock-in.

How is this list ranked?

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