RSpec is an open source Behavior-Driven Development (BDD) ruby package that lets you build a specification alongside your software. BDD is an approach to software development that combines Test-Driven Development (TDD), Domain Driven Design and Acceptance Test-Driven Planning. RSpec helps you do the TDD part of that equation, focusing on the documentation and design aspects of TDD.
Software Testing Tools: Unit Testing Tools, Functional Testing Tools, Load Testing Tools, Performance Testing Tools, Agile Testing Tools, DevOps
Apache JMeter is open source Java desktop software designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.