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Postman vs Stoplight

Postman is API development platform for designing, testing, documenting, and monitoring APIs, while Stoplight is API design, documentation, and governance platform with OpenAPI support. Postman is built for api developers wanting a complete api platform, whereas Stoplight targets api teams wanting design-first api development.

At a glance

Postman Stoplight
Best for API developers wanting a complete API platform API teams wanting design-first API development
Starting price Free Free
Free tier ✓ ✓
Open source — —
Free tier available ✓ ✓
Open source — —
API Design — ✓
Collections ✓ —
Docs ✓ ✓
Mock Servers ✓ ✓
Monitoring ✓ —
Style Guides — ✓

Postman

Strengths

  • Includes Collections as a core feature, purpose-built for api development workflows
  • Includes Mock Servers as a core feature, purpose-built for api development workflows
  • Free for 3 users — generous enough for most small teams to get real work done
  • Established product with 14+ years on the market and a mature ecosystem

Weaknesses

  • Free plan exists but key features are locked behind the paid upgrade
  • Fewer built-in features means you may need additional tools to cover gaps
  • Ecosystem of third-party integrations is smaller than the market leaders in api development
  • Mobile experience lags behind the desktop version in features and polish
Try Postman → Full review

Stoplight

Strengths

  • Includes API Design as a core feature, purpose-built for api development workflows
  • Includes Mock Servers as a core feature, purpose-built for api development workflows
  • Free for 1 project — generous enough for most small teams to get real work done
  • Established product with 11+ years on the market and a mature ecosystem

Weaknesses

  • Free plan exists but key features are locked behind the paid upgrade
  • Developer-oriented tooling may not suit non-technical team members
  • Ecosystem of third-party integrations is smaller than the market leaders in api development
  • Mobile experience lags behind the desktop version in features and polish
Try Stoplight → Full review

The bottom line

Pricing: Both tools offer free tiers, so you can test each before committing. Postman's free plan: Free for 3 users. Stoplight's free plan: Free for 1 project.

Feature gaps: Postman offers Collections and Monitoring that Stoplight lacks. Stoplight brings API Design and Style Guides that Postman does not have. Both share Docs and Mock Servers.

Team fit: Postman is geared toward any size teams, while Stoplight is aimed at mid-size teams teams. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.

Where each tool shines: Postman's biggest strengths are: includes collections as a core feature, purpose-built for api development workflows. includes mock servers as a core feature, purpose-built for api development workflows. Stoplight's biggest strengths are: includes api design as a core feature, purpose-built for api development workflows. includes mock servers as a core feature, purpose-built for api development workflows.

Watch out for: With Postman, users commonly note that free plan exists but key features are locked behind the paid upgrade. With Stoplight, the main complaint is that free plan exists but key features are locked behind the paid upgrade.

Choose Postman if...

  • You need a tool built for api developers wanting a complete api platform
  • You specifically need Collections and Monitoring
  • You care about includes mock servers as a core feature, purpose-built for api development workflows
  • Your team size fits the any size profile Postman is designed for
  • The free tier works for you: free for 3 users

Choose Stoplight if...

  • You need a tool built for api teams wanting design-first api development
  • You specifically need API Design and Style Guides
  • You care about includes mock servers as a core feature, purpose-built for api development workflows
  • Your team size fits the mid-size teams profile Stoplight is designed for
  • The free tier works for you: free for 1 project

Looking for more options?

Postman alternatives
See all 4 alternatives to Postman
Stoplight alternatives
See all 4 alternatives to Stoplight

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