K6 is a load testing tool built for engineering teams. The k6 API and CLI are easy-to-use, flexible and powerful. Create tests faster with our test builder, recorder or converters. Automate your tests to ensure that your infrastructure and application remain performant. Write tests in Javascript that mimic real-world scenarios. It has HTTP/1.1, HTTP/2, WebSocket and gRPC protocol support. 



K6 - A modern load testing tool, using Go and JavaScript

Gatling is an open-source load testing framework based on Scala, Akka and Netty. 
 

Gatling -  Stress Testing Tool

Vegeta is a versatile HTTP load testing tool built out of a need to drill HTTP services with a constant request rate. It can be used both as a command line utility and a library.Get them here.

Vegeta - HTTP load testing tool and library. 

Fortio (Φορτίο) started as, and is, Istio's load testing tool and now graduated to be its own project. Fortio runs at a specified query per second (qps) and records an histogram of execution time and calculates percentiles (e.g. p99 ie the response time such as 99% of the requests take less than that number (in seconds, SI unit)). It can run for a set duration, for a fixed number of calls, or until interrupted (at a constant target QPS, or max speed/load per connection/thread).
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Fortio also includes a set of server side features (similar to httpbin) to help debugging and testing: request echo back including headers, adding latency or error codes with a probability distribution, tcp echoing, tcp proxying, http fan out/scatter and gather proxy server, GRPC echo/health in addition to http, etc.

Fortio (Φορτίο) started as, and is, Istio's load testing tool and now graduated to be its own project. Fortio runs at a specified query per second (qps) and records an histogram of execution time and calculates percentiles (e.g. p99 ie the response time such as 99% of the requests take less than that number (in seconds, SI unit)). It can run for a set duration, for a fixed number of calls, or until interrupted (at a constant target QPS, or max speed/load per connection/thread).

Fortio - Load testing library, command line tool, advanced echo server and web UI in Go

Tsung is an open-source multi-protocol distributed load testing tool. It can be used to stress HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP and Jabber/XMPP servers.  The purpose of Tsung is to simulate users in order to test the scalability and performance of IP based client/server applications. You can use it to do load and stress testing of your servers. Many protocols have been implemented and tested, and it can be easily extended. 

Tsung - Distributed Load Testing Tool

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K6 - A modern load testing tool, using Go and JavaScript

Gatling - Stress Testing Tool

Vegeta - HTTP load testing tool and library.

Fortio - Load testing library, command line tool, advanced echo server and web UI in Go

Tsung - Distributed Load Testing Tool

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Projects

K6 - A modern load testing tool, using Go and JavaScript

Gatling - Stress Testing Tool

Vegeta - HTTP load testing tool and library.

Fortio - Load testing library, command line tool, advanced echo server and web UI in Go

Tsung - Distributed Load Testing Tool

TechStack

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