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Robot Framework vs Behat: open-source BDD tools compared

Metrics as of , from the GitHub or GitLab API of each repository. Refreshed monthly.

Summary

Robot Framework: Python automation framework with a plain text, keyword-based syntax for acceptance testing, ATDD and RPA.

Behat: BDD framework for PHP that runs plain-language feature specifications against business expectations.

Both are listed under BDD. The table gives repository metrics from the GitHub API with their fetch date, then the documented facts used for every comparison in this category, each linked to the README or docs page it comes from. A cell reads "not documented" when the fact was not found in the project's documentation (2 of 12 fact cells here); that does not mean the feature is absent.

Side by side

Robot Framework and Behat: metrics and documented facts, in the fixed row order used for BDD comparisons.
FactRobot FrameworkBehat
Stars11,90613,9701
Forks2,56616131
Contributors23711971
Last release2026-09-1412026-09-071
Last commit2026-09-2112026-09-181
Commits in 90 days2021181
LicenseApache-2.01MIT1
Primary languagePython1PHP1
Statusactive1active1
Languages for writing testsRobot Framework plain text syntax; Python as the primary language for extending it source: READMEPHP source: Docs: Behat documentation
Specification formatPlain text keyword-driven test and task files (.robot), extended with libraries source: READMEGherkin feature files with PHP FeatureContext classes source: Docs: Quick Start
Parallel or distributed executionExternal tools, developed as separate projects, for parallel execution source: Docs: Robot Framework User Guidenot documentednot found in the project's documentation as of
CI integrationxUnit compatible output for CI servers such as Jenkins; Jenkins Robot Framework plugin source: Docs: Robot Framework User Guidenot documentednot found in the project's documentation as of
Report formatsHTML log and report, XML and JSON output files, xUnit compatible XML source: Docs: Robot Framework User Guidepretty, progress, junit (JUnit XML), json source: Docs: Output Formatters
Install methodpip (pip install robotframework) source: READMEComposer (composer require --dev behat/behat) source: README

1 Fetched from the GitHub or GitLab API on . Hover a value for its own date.

When each fits

Written from each project's documented scope, not from preference. Neither tool is ranked.

Robot Framework

Fits projects that automate acceptance testing, acceptance test driven development or robotic process automation; its README describes a plain text syntax extended with generic and custom libraries. source: README

Behat

Fits projects that test PHP software against business expectations; its docs describe the PHP implementation of Cucumber, executing specifications in plain language. source: Docs: Behat documentation

More on these tools

Sources

  1. GitHub REST API: repository, read
  2. GitHub REST API: repository, read
  3. GitHub REST API: contributors, read
  4. GitHub REST API: contributors, read
  5. GitHub REST API: latest release, read
  6. GitHub REST API: latest release, read
  7. GitHub REST API: commits, read
  8. GitHub REST API: commits, read
  9. README, read
  10. Docs: Behat documentation, read
  11. Docs: Quick Start, read
  12. Docs: Robot Framework User Guide, read
  13. Docs: Output Formatters, read
  14. README, read

Documented facts collected 2026-09-22. See the methodology for how metrics and facts are gathered.