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Developer Tools · head to head

Frappe vs OutSystems

Frappe logo

Frappe

Developer Tools

The Python web framework behind ERPNext, sold as managed hosting through Frappe Cloud

From
Free
Free plan
Yes
Full reviewWebsite
OutSystems logo

OutSystems

No-Code

Enterprise low-code platform priced by application complexity units, not just users

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only Frappe has a free tier, so it costs nothing to try first.
  • Each has a real cost: Frappe the framework is strongly opinionated: its own ORM, templating and job queue mean general Python and Django experience transfers only partly, and onboarding a new developer takes weeks rather than days.; OutSystems application Objects grow with every screen, table and API an app gains, so a successful app that keeps adding features can push the account into AO overage charges that were not modelled at initial budget time.
  • They diverge on capability: Frappe covers DocType modelling, OutSystems covers Visual application modelling.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Frappe and OutSystems actually diverge.

Attributes where Frappe and OutSystems differ
AttributeFrappeOutSystems
Starting priceFreeOn request
Pricing modelPer month by site or serverApplication Object consumption plus internal and external user packs
Free tierYesNo
PlatformsWeb, Linux, DockerWeb, iOS, Android
CategoryDeveloper ToolsNo-Code

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Frappe

  • DocType modelling
  • Role and field permissions
  • Built-in REST API
  • Background jobs
  • Bench CLI
  • Frappe Cloud hosting
  • App marketplace
  • Multi-tenancy

Only in OutSystems

  • Visual application modelling
  • Generated deployable code
  • One-click deployment
  • AI-assisted development
  • Application Object governance
  • Prebuilt integrations

What people use each for

The jobs each tool is most often brought in to do.

Frappe

  • A team building an internal business application that needs permissions, audit trail and an API on day one rather than in month threenot OutSystems
  • An ERPNext user who wants managed hosting, automatic updates and offsite backups without hiring a systems administratornot OutSystems
  • An Indian or emerging-market business that wants to pay for application hosting in local currency at local price pointsnot OutSystems
  • A consultancy shipping custom vertical apps to clients on a shared framework with per-client site isolationnot OutSystems

OutSystems

  • An enterprise replacing custom .NET or Java application development with a governed low-code platform at scalenot Frappe
  • A company building customer-facing portals where the external-user pricing tier (packs of 10,000) is materially cheaper than licensing customers as internal usersnot Frappe
  • An IT department that wants generated, inspectable code rather than a proprietary black-box runtimenot Frappe
  • An organisation with a large existing application portfolio needing centralised governance across many apps built by different teamsnot Frappe

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Frappe

  • The framework is strongly opinionated: its own ORM, templating and job queue mean general Python and Django experience transfers only partly, and onboarding a new developer takes weeks rather than days.
  • The developer pool is small and heavily concentrated in India, so hiring Frappe experience elsewhere is slow and expensive relative to mainstream stacks.
  • Documentation is uneven in depth and lags behind releases in places, so real answers often come from reading the source or the community forum.
  • Major version upgrades of the framework have historically broken custom apps that reach past the DocType layer, so bespoke code carries a recurring maintenance cost at each upgrade.
  • Frappe Cloud recommends against its cheapest Hetzner-backed option for mission-critical production, so the headline $5 entry price is not the price of a production-grade deployment.

OutSystems

  • Application Objects grow with every screen, table and API an app gains, so a successful app that keeps adding features can push the account into AO overage charges that were not modelled at initial budget time.
  • Internal users are sold in packs of 100 and external users in packs of 10,000, so a company just over a pack boundary in either category pays for a full additional pack rather than a handful of extra seats.
  • Entry-level ODC pricing starts around 36,300 US dollars a year before any AO overage or extra user packs, which puts it out of reach for smaller teams evaluating low-code options.
  • Cloud infrastructure and hosting costs are frequently separate from the platform licence, so the all-in bill is higher than the headline subscription figure suggests.
  • Migrating a large application portfolio off OutSystems once built is difficult, since the generated code and platform-specific patterns are not designed for a clean export to standard frameworks.

Pricing, plan by plan

Frappe

Free
  • Framework, self-hostedFree
    • MIT licensed, no licence fee
    • Install with bench on your own Linux servers
    • You carry updates, backups and security patching
  • Frappe Cloud Sites$5/month
    • Also listed at ₹410 per month
    • Shared servers with 150+ installable apps
    • Automatic updates and offsite backups
  • Frappe Cloud Servers$40/month
    • Also listed at ₹3,600 per month
    • Dedicated or shared virtual machines
    • Unlimited sites on your server

OutSystems

On request
  • ODC Entry$undefined/year
    • Entry-level Application Object allowance included
    • Internal users sold in packs of 100
    • External users sold in packs of 10,000
  • ODC Enterprise$undefined/year
    • Custom AO, user pack and environment volumes
    • Negotiated multi-year enterprise agreements
    • Premium support and dedicated infrastructure options

Which should you pick?

Choose Frappe if

  • You need doctype modelling.
  • You want to start without paying.
  • You work on Web, Linux, Docker.
  • You also want role and field permissions.
Frappe review

Choose OutSystems if

  • You need visual application modelling.
  • You work on Web, iOS, Android.
  • You also want generated deployable code.
OutSystems review

Questions people ask

Is Frappe or OutSystems better?
Neither clearly leads. Frappe starts at Free and OutSystems at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Frappe or OutSystems?
Frappe has a free tier; the other does not. Paid plans start at Free for Frappe and On request for OutSystems.
Does Frappe or OutSystems run on more platforms?
Frappe runs on Web, Linux, Docker. OutSystems runs on Web, iOS, Android.
Can I use Frappe for free?
Yes. Frappe has a free tier, so you can try it without paying. OutSystems starts at On request.
What is Frappe best used for?
Frappe is most often used for a team building an internal business application that needs permissions, audit trail and an api on day one rather than in month three, an erpnext user who wants managed hosting, automatic updates and offsite backups without hiring a systems administrator, an indian or emerging-market business that wants to pay for application hosting in local currency at local price points, a consultancy shipping custom vertical apps to clients on a shared framework with per-client site isolation. Of those, a team building an internal business application that needs permissions, audit trail and an api on day one rather than in month three and an erpnext user who wants managed hosting, automatic updates and offsite backups without hiring a systems administrator are not what OutSystems is typically brought in for.
What can Frappe do that OutSystems cannot?
Frappe covers DocType modelling, Role and field permissions, Built-in REST API, Background jobs. OutSystems covers Visual application modelling, Generated deployable code, One-click deployment, AI-assisted development.

Answered from the vendors’ own pages

Frappe: Is Frappe the same as ERPNext?

No. Frappe is the framework; ERPNext is the ERP application written on it. You can run Frappe without ERPNext to build your own applications.

OutSystems: What is an Application Object?

A unit OutSystems uses to measure application complexity, counting elements such as screens, database tables and exposed APIs; more AOs mean a bigger licence requirement.

Frappe: What licence is the framework under?

MIT, which is permissive and imposes no obligation to publish your changes, unlike the AGPL used by several open source ERP rivals.

OutSystems: Is there a free tier?

OutSystems has offered free or trial tiers historically for evaluation, but production use at any scale runs on paid ODC plans.

Frappe: Can I pay in rupees?

Yes. Frappe Cloud publishes the same plans in Indian rupees, ₹410 a month for sites and ₹3,600 for servers, rather than converting a dollar price at checkout.

OutSystems: How does external user pricing work?

External users, typically customers or partners, are sold in packs of 10,000 at roughly a hundredth of the per-seat cost of internal (employee) user packs.

Frappe: Do I have to use Frappe Cloud?

No, self-hosting with bench or Docker is fully supported and free. Frappe Cloud is a convenience purchase, and it funds the open source work.

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