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Technology · head to head

Postman vs Selenium

Postman logo

Postman

Technology

The API platform for building and using APIs

From
Free
Rated
-
Full reviewWebsite
Selenium logo

Selenium

Testing

Browser automation framework and the W3C WebDriver standard

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Postman free plan limited to single user as of March 1, 2026, making it unsuitable for teams without paid plans; Selenium flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
  • They diverge on capability: Postman covers API client, Selenium covers W3C WebDriver.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Postman and Selenium actually diverge.

Attributes where Postman and Selenium differ
AttributePostmanSelenium
Pricing modelUnknownOpen source, no licence fee
PlatformsWeb, Windows, macOS, LinuxLinux, macOS, Windows, Web
CategoryTechnologyTesting
Founded2014Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Postman

  • API client
  • Automated testing
  • Mock servers
  • Documentation
  • Monitors
  • Workspaces
  • Version control
  • API design

Only in Selenium

  • W3C WebDriver
  • Many language bindings
  • Selenium Grid
  • Broad browser support

What people use each for

The jobs each tool is most often brought in to do.

Postman

  • API testingnot Selenium
  • API documentationnot Selenium
  • API monitoringnot Selenium
  • Team collaborationnot Selenium
  • API developmentnot Selenium

Selenium

  • Cross-browser testing where Safari and legacy browsers must be coverednot Postman
  • Teams whose test suites are written in Java or C# rather than JavaScriptnot Postman
  • Distributing a large suite across a grid of machinesnot Postman

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Postman

  • Free plan limited to single user as of March 1, 2026, making it unsuitable for teams without paid plans
  • Only 25 collection runs per month and 1,000 API calls/month on free tier
  • Removed local-only Scratch Pad mode in 2023, forcing cloud account creation and sync
  • Requires Postman account and internet connection for most features
  • Cloud-first architecture with mandatory syncing to Postman's cloud servers
  • No CI/CD integration or advanced security features on free plan

Selenium

  • Flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
  • Setup involves drivers, versions and grid infrastructure that Playwright and Cypress bundle away
  • Slower to run than tools that talk to browsers over a debugging protocol rather than WebDriver

Pricing, plan by plan

Postman

Free
  • FreeFree
    • 1 user
    • 25 collection runs/month
    • 1,000 API calls/month
  • Team$14/month
    • Team collaboration
    • Shared workspaces
    • API mocking
  • Professional$29/month
    • Team features
    • Advanced security
    • SSO
  • Enterprise$49/month
    • Professional features
    • Custom integrations
    • Priority support

Selenium

Free
  • SeleniumFree
    • Full functionality
    • Unlimited tests
    • Community support

Which should you pick?

Choose Postman if

  • You need api client.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux.
  • You also want automated testing.
Postman review

Choose Selenium if

  • You need w3c webdriver.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Web.
  • You also want many language bindings.
Selenium review

Questions people ask

Is Postman or Selenium better?
Neither clearly leads. Postman starts at Free and Selenium at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Postman or Selenium?
Postman starts at Free and Selenium at Free.
Does Postman or Selenium run on more platforms?
Postman runs on Web, Windows, macOS, Linux. Selenium runs on Linux, macOS, Windows, Web.
Can I use Postman for free?
Both have a free tier, so you can try either at no cost before committing.
What is Postman best used for?
Postman is most often used for api testing, api documentation, api monitoring, team collaboration. Of those, api testing and api documentation are not what Selenium is typically brought in for.
What can Postman do that Selenium cannot?
Postman covers API client, Automated testing, Mock servers, Documentation. Selenium covers W3C WebDriver, Many language bindings, Selenium Grid, Broad browser support.

Answered from the vendors’ own pages

Postman: What is the cost of Postman?

Postman has a free plan limited to 1 user, 25 collection runs/month, 1,000 API calls/month. Team plans start at $14/user/month for Basic. Professional at $29/user/month, and Enterprise at $49/user/month.

Source
Selenium: Is Selenium free?

Yes, open source with no licence fee. Paid costs come from grid infrastructure or services like BrowserStack.

Postman: Can I use Postman offline?

Postman requires an internet connection to sync collections to the cloud. Since 2023, the Scratch Pad local-only mode was removed. Users must sign in with a Postman account, and collections sync to cloud by default. Offline work is possible but limited without cloud sync features.

Source
Selenium: Selenium or Playwright?

Playwright handles waiting automatically and is faster to set up, which removes most flakiness complaints. Selenium wins on language breadth, browser coverage including Safari, and existing suites you already have.

Postman: Does Postman have team collaboration?

Team collaboration is not available on the free plan (limited to 1 user). Team plans start at $14/user/month and include shared workspaces, real-time collaboration, and team management features.

Source
Selenium: Is Selenium still relevant?

Yes. Its WebDriver protocol is a W3C standard implemented by every major browser, and very large existing suites are not rewritten cheaply.

Postman: What are the free plan limits?

Free plan allows: 1 user only, 25 collection runs per month, 1,000 API calls/month, and 1,000 mock server calls/month. No CI/CD integration or advanced security features.

Source
Postman: Does Postman work with other development tools?

Postman integrates with Git repositories, offers a Node.js runner (Newman) for automation, and connects with popular CI/CD platforms. Teams using git-native workflows may prefer alternatives like Bruno.

Source
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