Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · API Design Tools

Postman vs WSO2 API Designer

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Postman #2 in API Design Tools 9.2/10 Free plan Free plan✓ 1 of 6 features Visit Postman
WSO2 API Designer #5 in API Design Tools 8.7/10 Pricing on request · 30-day trial Free trial✓ 1 of 6 features Visit WSO2

Postman leads on 1 check, WSO2 API Designer on 0, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePostman · 9.2/10
  • Free planonly Postman
  • Free trialonly WSO2 API Designer

Postman scores higher on our rubric for api design tools: 9.2 against 8.7 out of 10; our editors rank them #2 and #5.

Postman offers free plan; WSO2 API Designer doesn't.

Postman is the better fit for teams wanting broad API workflows and collaboration. WSO2 API Designer is the better fit for teams designing governed OpenAPI specifications in VS Code.

  • Postman fits best

    Teams wanting broad API workflows and collaboration

  • WSO2 API Designer fits best

    Teams designing governed OpenAPI specifications in VS Code

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 Postman 9.2/10 Visit ↗ WSO2 API Designer 8.7/10 Visit ↗
At a glance
Editor score 9.2 8.7
Ranking #2 in API Design Tools #5 in API Design Tools
Best for Teams wanting broad API workflows and collaboration Teams designing governed OpenAPI specifications in VS Code
Pricing model Free plan + paid Paid
Starting price $9/mo —
Free plan ✓ (best) —
Free trial — 30 days
Deployment Cloud, Desktop, Browser extension Desktop
Support Tickets, Community, Docs Community, Docs
Integrations 8 integrations 3 integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Postman 1/6 · WSO2 API Designer 1/6
OpenAPI support Not checked yet ✓ (best)
AsyncAPI support Not checked yet Not checked yet
Mock server ✓ (best) Not checked yet
Contract validation Not checked yet Not checked yet
Git synchronization Not checked yet Not checked yet
Team collaboration Not checked yet Not checked yet
Specs
Included team seats Not checked yet Not checked yet
Our review
Pros
  • Supports HTTP, GraphQL, gRPC, WebSocket, and MQTT requests
  • Combines specifications, mocks, testing, documentation, and CI/CD
  • Runs across web, desktop, Chrome extension, and API platforms
  • Visual OpenAPI 3.x editing with form-based design workflows
  • Governance reports cover design quality, AI readiness, and OWASP API security
  • Custom Spectral rules and AI-assisted fixes support governed workflows
Cons
  • Annual billing saves up to 25% compared to monthly
  • Advanced governance and audit reporting require Enterprise
  • It is not open-source software
  • No free plan is available
  • Pricing uses a contact-sales model
  • The workflow is centered on Visual Studio Code
Our verdict

Postman is an API platform for developers and teams building, testing, documenting, and collaborating on APIs. Its API Client sends and inspects HTTP, GraphQL, gRPC, WebSocket, and MQTT requests, while collections organize requests,…

Read the review →

WSO2 API Designer is a Visual Studio Code extension for creating, editing, validating, and improving OpenAPI specifications. It is aimed at developers and API teams that keep OpenAPI files in VS Code and want design controls alongside…

Read the review →
  1. PostmanAPI Design Tools 9.2Free plan
  2. WSO2 API DesignerAPI Design Tools 8.7Pricing on request · 30-day trial

Strengths and trade-offs

  • Postman — where it wins

    • Supports HTTP, GraphQL, gRPC, WebSocket, and MQTT requests
    • Combines specifications, mocks, testing, documentation, and CI/CD
    • Runs across web, desktop, Chrome extension, and API platforms

    Where it doesn't

    • Annual billing saves up to 25% compared to monthly
    • Advanced governance and audit reporting require Enterprise
    • It is not open-source software

  • WSO2 API Designer — where it wins

    • Visual OpenAPI 3.x editing with form-based design workflows
    • Governance reports cover design quality, AI readiness, and OWASP API security
    • Custom Spectral rules and AI-assisted fixes support governed workflows

    Where it doesn't

    • No free plan is available
    • Pricing uses a contact-sales model
    • The workflow is centered on Visual Studio Code
  • Postman9.2/10 · Free plan

    A broad API workspace spanning design, testing, mocks, documentation, and CI/CD.

    Visit PostmanFull verdict →
  • WSO2 API Designer8.7/10 · Pricing on request · 30-day trial

    A governed OpenAPI workspace for teams already working in VS Code.

    Visit WSO2Full verdict →

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