Postman
Swell
| Feature | Postman | Swell |
|---|---|---|
| Pricing | Free / from $14/mo | Free / from $299/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.3 / 5 |
| Best For | developers, qa-engineers, backend-teams, api-designers | developers, subscription-businesses, custom-ecommerce, b2b-commerce |
| Founded | 2014 | 2016 |
| Api Testing | ✓ | ✗ |
| Collections | ✓ | ✗ |
| Environments | ✓ | ✗ |
| Mock Servers | ✓ | ✗ |
| Documentation | ✓ | ✗ |
| Monitoring | ✓ | ✗ |
| Flows | ✓ | ✗ |
| Headless Api | ✗ | ✓ |
| Subscriptions | ✗ | ✓ |
| Multi Currency | ✗ | ✓ |
| Custom Models | ✗ | ✓ |
| Webhooks | ✗ | ✓ |
| Admin Dashboard | ✗ | ✓ |
✓ Postman Pros
- Industry standard for API testing and development
- Collaborative workspaces for team API development
- Auto-generated documentation from collections
- Mock servers for frontend development
✗ Postman Cons
- Desktop app is resource-heavy
- Free tier workspace limits restrictive
- Can be overkill for simple API testing
✓ Swell Pros
- Extremely flexible API
- Built-in subscription support
- Good for unique business models
- Developer-friendly
✗ Swell Cons
- Requires development resources
- Expensive for small stores
- Smaller ecosystem
The Verdict
Postman is built for developers and qa engineers, with a focus on api-testing and collections. Swell targets developers and subscription businesses and leads with headless-api and subscriptions.
On pricing, Postman is the clear winner for budget-conscious users — starting at $14/mo compared to $299/mo for Swell. That $285/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Postman offers broader built-in capabilities (7 features vs 6), while Swell takes a more focused approach — which can mean a simpler, faster onboarding experience.
Both tools are a solid fit for developers — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.