Robot Framework vs Kahlan: What are the differences?
Developers describe Robot Framework as "A test automation framework for acceptance testing and ATDD". It is a generic test automation framework for acceptance testing and acceptance test-driven development. It has easy-to-use tabular test data syntax and it utilizes the keyword-driven testing approach. Its testing capabilities can be extended by test libraries implemented either with Python or Java, and users can create new higher-level keywords from existing ones using the same syntax that is used for creating test cases. On the other hand, Kahlan is detailed as "A full-featured Unit & BDD test framework". It is a full-featured Unit & BDD test framework a la RSpec/JSpec which uses a describe-it syntax and moves testing in PHP one step forward.
Robot Framework and Kahlan can be primarily classified as "Testing Frameworks" tools.
Kahlan is an open source tool with 1K GitHub stars and 54 GitHub forks. Here's a link to Kahlan's open source repository on GitHub.