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OutSystems vs Stacker: Which Low-Code / No-Code Is Better in 2026?

Compare pricing, features, integrations, verified reviews, AI capabilities, security, and customer satisfaction, side by side, with no marketing spin.

OutSystems
OutSystems
Leads 1/9
Rating
,
Reviews
0
From
Custom

in Low-Code / No-Code

Stacker
Stacker
Rating
,
Reviews
0
From
Custom

in Low-Code / No-Code

Jump to scorecard Ask SIA

The Short Answer

OutSystems vs Stacker, in 15 seconds

Choose OutSystems if…

  • You have strict security & compliance needs

Choose Stacker if…

  • You prefer Stacker's approach and ecosystem

Head-to-Head Scorecard

How OutSystems and Stacker score

OutSystems leads on 1 of 9 measured dimensions.

  • Customer Rating

    Average score from verified user reviews

    Even
    OutSystems
    No reviews
    Stacker
    No reviews

  • Review Volume

    Number of verified reviews, a proxy for adoption

    Even
    OutSystems
    0
    Stacker
    0

  • Entry Pricing

    Lowest published starting price (free plan = lowest)

    Even
    OutSystems
    Custom
    Stacker
    Custom

  • Free Access

    Availability of a free plan and/or free trial

    Even
    OutSystems
    Free trial
    Stacker
    Free trial

  • Integrations

    Number of listed third-party integrations

    Even
    OutSystems
    6
    Stacker
    6

  • Features

    Number of listed product capabilities

    Even
    OutSystems
    0
    Stacker
    0

  • AI Features

    Capabilities mentioning AI, automation or ML

    Even
    OutSystems
    ,
    Stacker
    ,

  • Security & Compliance

    Number of listed compliance certifications

    OutSystems
    OutSystems
    3
    Stacker
    2

  • Platforms & Deployment

    Supported platforms and deployment options

    Even
    OutSystems
    4
    Stacker
    4

Feature Comparison

OutSystems vs Stacker feature breakdown

Search or filter the full feature matrix, core features, AI, integrations, APIs, security and compliance.

OutSystems
Stacker
Overview
User rating
,
,
Pricing model
Quote-based
Quote-based
Starting price
Custom
Custom
Free version
Free trial
Features
Key capabilities
,
,
AI features
,
,
Integrations & API
Integrations
SAPSalesforceMicrosoft AzureAWSServiceNowREST APIs
AirtableGoogle SheetsSalesforceMicrosoft 365ZapierREST APIs
Public API
Platforms
Deployment
CloudSaaS
CloudSaaS
Platforms
WebAPI
WebAPI
Mobile support
Security & Compliance
Compliance
SOC 2ISO 27001FedRAMP
SOC 2GDPR
Vendor
Company
,
,
Verified
Founded
2001
2019
Headquarters
Boston, Massachusetts, USA
London, United Kingdom

Pricing Comparison

OutSystems vs Stacker pricing

Entry pricing, plan tiers and the cost factors that shape total cost of ownership.

OutSystems

Custom to start
ProfessionalCustom
  • Integrations
  • visual full-stack development
  • Analytics and reporting
  • Standard support
EnterpriseCustom
  • app modernization
  • Dedicated support and onboarding
  • cloud-native deployment
  • Advanced security and controls

Stacker

Custom to start
ProfessionalCustom
  • Integrations
  • Analytics and reporting
  • apps on existing data
  • customer portals
EnterpriseCustom
  • Dedicated support and onboarding
  • Advanced security and controls
  • permissions
  • workflows

Total cost of ownership factors

Free planOutSystems Stacker
Free trial to evaluateOutSystems Stacker
Transparent published pricingOutSystems Stacker
Public API (build vs. buy add-ons)OutSystems Stacker

Beyond list price, factor in implementation, training, add-ons and per-seat scaling when estimating total cost of ownership.

Pros & Cons

OutSystems vs Stacker: strengths and trade-offs

OutSystems

Pros

  • Free trial offered
  • Compliance: SOC 2, ISO 27001, FedRAMP
  • Public API available

Cons

  • No free plan
  • Pricing is quote-based (less transparent)

Stacker

Pros

  • Free trial offered
  • Compliance: SOC 2, GDPR
  • Public API available

Cons

  • No free plan
  • Pricing is quote-based (less transparent)

Buyer Fit

Who should use OutSystems vs Stacker?

Startups

Either

Either keeps early-stage costs lowest with its entry tier.

Small businesses

Either

Either offers the most accessible pricing for lean teams.

Agencies

Either

Either connects to more tools for multi-client workflows.

Enterprises

OutSystems

OutSystems leads on compliance and breadth for complex needs.

Ecommerce

Either

Either integrates with more of the commerce stack.

SaaS companies

Either

Either is the more developer- and automation-friendly choice.

Integration overlap

Shared integrations (2)

SalesforceREST APIs

Only in OutSystems (4)

SAPMicrosoft AzureAWSServiceNow

Only in Stacker (4)

AirtableGoogle SheetsMicrosoft 365Zapier

Keep Exploring

Other alternatives worth considering

Similar low-code / no-code products buyers compare alongside OutSystems and Stacker.

SmartSuite

SmartSuite

Custom
Tadabase

Tadabase

Custom
Knack

Knack

Custom
Bubble

Bubble

$29/mo
Glide

Glide

$0/mo
Appian

Appian

Custom
More OutSystems alternatives →More Stacker alternatives →

Ask SIA which solution fits your business

SIA, Saaskart's AI buying assistant, weighs OutSystems and Stacker against your team size, budget, integrations and compliance needs, then recommends the right fit and the questions to ask each vendor.

Get a personalised recommendation

OutSystems vs Stacker, Frequently Asked Questions

What is the difference between OutSystems and Stacker?

OutSystems and Stacker are both Low-Code / No-Code solutions. OutSystems is rated 0.0/5 by 0 users, while Stacker is rated 0.0/5 by 0 users. The main differences lie in pricing, features, and target audience.

Which is better, OutSystems or Stacker?

Based on user ratings, OutSystems scores higher at 0.0/5. The best choice depends on your team size, budget, and specific requirements.

Which is cheaper, OutSystems or Stacker?

Both products have custom pricing. We recommend contacting both vendors for a quote tailored to your team size.

Does OutSystems or Stacker have a free plan?

Neither OutSystems nor Stacker currently offers a free plan, but OutSystems provides a free trial.

Can I switch from OutSystems to Stacker?

Switching between OutSystems and Stacker is possible. Both support data export. Check integration compatibility and plan for data migration to minimise disruption to your team.

Who should use OutSystems vs Stacker?

OutSystems is best suited for teams that prioritise enterprise features. Stacker works well for teams needing advanced capabilities.

Our Verdict

The bottom line on OutSystems vs Stacker

Best Overall

Either

It's a tie balances user satisfaction and proven adoption.

Best for Startups

Either

It's a tie has the friendliest entry point for new teams.

Best for Enterprise

OutSystems

OutSystems leads on compliance and feature breadth.

Best Value

Either

It's a tie delivers the lowest cost to get started.

Best AI Features

Either

Comparable AI capabilities on both sides.

Highest Rated

Either

Both earn equal user ratings.

Ready to decide between OutSystems and Stacker?

Visit OutSystems Visit Stacker Ask SIA
Compare more alternatives →

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