Keycloak vs Postman
Updated June 2026 · A structured head-to-head comparison.
The verdict
Both Keycloak and Postman are credible api tools tools, and the right pick comes down to your priorities.
Keycloak - Open-source identity and access management
Choose Postman if you'd rather have broader platform coverage. The collaborative platform for API development.
Keycloak vs Postman: side by side
| Dimension | Keycloak | Postman |
|---|---|---|
| Starting price | Free | Free - $14/user/mo |
| Free plan | Yes | Yes |
| Pricing model | Open source | Freemium |
| Best for | Developers, Enterprises | Developers, Api Teams |
| Platforms | Self Hosted, Api | Web, Windows, Mac, LinuxWinner |
| Rating | 4.4/5 | 4.6/5 |
Keycloak key facts
- Vendor
- Red Hat
- Pricing
- Open source - Free
- Free tier
- Yes
- Platforms
- Self Hosted, Api
- Best for
- Developers, Enterprises
- Editor rating
- 4.4 / 5
- Founded
- 2014
- Headquarters
- Raleigh, USA
Postman key facts
- Vendor
- Postman
- Pricing
- Freemium - Free - $14/user/mo
- Free tier
- Yes
- Platforms
- Web, Windows, Mac, Linux
- Best for
- Developers, Api Teams
- Editor rating
- 4.6 / 5
- Founded
- 2014
- Headquarters
- San Francisco, CA, USA
Frequently asked questions
Is Keycloak better than Postman?
Neither is universally better - Postman edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Keycloak or Postman cheaper?
Keycloak is the more affordable of the two to get started, at free. Keycloak starts at free; Postman starts at free - $14/user/mo.
Can Keycloak replace Postman?
Yes for most teams - both are api tools tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.