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Head-to-head · API Design Tools

Swagger Editor vs Smithy

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Swagger Editor #6 in API Design Tools 8.4/10 Free plan Free plan✓ 2 of 6 features Visit Swagger Editor
Smithy #8 in API Design Tools 8.1/10 Open source ✓ 2 of 6 features Visit Smithy

Swagger Editor leads on 0 checks, Smithy on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSwagger Editor · 8.4/10
  • Free planonly Swagger Editor

Swagger Editor scores higher on our rubric for api design tools: 8.4 against 8.1 out of 10; our editors rank them #6 and #8.

Swagger Editor is the better fit for developers wanting a free OpenAPI editor. Smithy is the better fit for teams using model-first, protocol-agnostic API design.

  • Swagger Editor fits best

    Developers wanting a free OpenAPI editor

  • Smithy fits best

    Teams using model-first, protocol-agnostic API design

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Swagger Editor 8.4/10 Visit ↗ Smithy 8.1/10 Visit ↗
At a glance
Editor score 8.4 8.1
Ranking #6 in API Design Tools #8 in API Design Tools
Best for Developers wanting a free OpenAPI editor Teams using model-first, protocol-agnostic API design
Pricing model Free Free
Starting price Free plan Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud, Self-hosted Self-hosted
Platforms Web Windows, macOS, Linux
Support Docs Community, Docs
Built for Solo, Small business Small business, Mid-market, Enterprise
Features Swagger Editor 2/6 · Smithy 2/6
OpenAPI support ✓ ✓
AsyncAPI support ✓ (best) Not checked yet
Mock server Not checked yet Not checked yet
Contract validation Not checked yet Not checked yet
Git synchronization Not checked yet Not checked yet
Team collaboration Not checked yet ✓ (best)
Specs
Included team seats Not checked yet Not checked yet
Our review
Pros
  • Supports OpenAPI, Swagger 2.0, OpenAPI 3.x, and AsyncAPI
  • Provides validation feedback, rendering, and autocomplete
  • Offers Docker self-hosting plus npm and plugin customization
  • Defines services and APIs independently of wire protocol
  • Generates client, server, and reference documentation outputs
  • Converts models to OpenAPI and supports AWS integrations
Cons
  • Standalone editor is aimed at individuals and small teams
  • Broad collaboration workflows are not its primary focus
  • Self-hosting requires a Docker-based local deployment
  • Local CLI rather than a hosted API design SaaS product
  • Requires model-driven workflows and build plugins
  • Paid plans and hosted collaboration details are not provided
Our verdict

Swagger Editor is a browser-based and self-hostable tool for designing, describing, and documenting APIs. It supports Swagger 2.0, OpenAPI 3.x, and AsyncAPI specifications, making it suitable for developers and small teams that want a…

Read the review →

Smithy is an open-source interface definition language and build tool for designing services and APIs. It is aimed at teams that want to define a service model once and use that model across validation, code generation, documentation, and…

Read the review →
  1. Swagger EditorAPI Design Tools 8.4Free plan
  2. SmithyAPI Design Tools 8.1Open source

Strengths and trade-offs

  • Swagger Editor — where it wins

    • Supports OpenAPI, Swagger 2.0, OpenAPI 3.x, and AsyncAPI
    • Provides validation feedback, rendering, and autocomplete
    • Offers Docker self-hosting plus npm and plugin customization

    Where it doesn't

    • Standalone editor is aimed at individuals and small teams
    • Broad collaboration workflows are not its primary focus
    • Self-hosting requires a Docker-based local deployment

  • Smithy — where it wins

    • Defines services and APIs independently of wire protocol
    • Generates client, server, and reference documentation outputs
    • Converts models to OpenAPI and supports AWS integrations

    Where it doesn't

    • Local CLI rather than a hosted API design SaaS product
    • Requires model-driven workflows and build plugins
    • Paid plans and hosted collaboration details are not provided

More comparisons

All API design tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update