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Robot Framework vs Codeception: 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.

Codeception: Full-stack PHP testing framework for acceptance, functional and unit tests written as actor steps.

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; that does not mean the feature is absent.

Side by side

Robot Framework and Codeception: metrics and documented facts, in the fixed row order used for BDD comparisons.
FactRobot FrameworkCodeception
Stars11,90614,8571
Forks2,56611,2791
Contributors23718531
Last release2026-09-1412026-02-181
Last commit2026-09-2112026-08-061
Commits in 90 days202141
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: README
Specification formatPlain text keyword-driven test and task files (.robot), extended with libraries source: READMEPHP code; classic PHPUnit tests also run source: README
Parallel or distributed executionExternal tools, developed as separate projects, for parallel execution source: Docs: Robot Framework User GuideSharding across CI jobs with the --shard option; robo-paracept task set for groups source: Docs: Parallel Execution
CI integrationxUnit compatible output for CI servers such as Jenkins; Jenkins Robot Framework plugin source: Docs: Robot Framework User GuideSetup steps for Jenkins, GitHub Actions, GitLab CI and Travis CI source: Docs: Continuous Integration
Report formatsHTML log and report, XML and JSON output files, xUnit compatible XML source: Docs: Robot Framework User GuideCLI, HTML (--html), JUnit XML (--xml); Allure through an extension source: Docs: Reporting
Install methodpip (pip install robotframework) source: READMEComposer (composer require "codeception/codeception" --dev) or codecept.phar 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

Codeception

Fits projects that write acceptance, functional and unit tests for PHP applications; its README describes a full-stack testing framework for PHP. source: README

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. README, read
  11. Docs: Robot Framework User Guide, read
  12. Docs: Parallel Execution, read
  13. Docs: Continuous Integration, read
  14. Docs: Reporting, read

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