Testing distributed systems under hard failures like network partitions and instance termination is critical, but it's also important we test them under less catastrophic conditions because this is what they most often experience. Comcast is a tool designed to simulate common network problems like latency, bandwidth restrictions, and dropped/reordered/corrupted packets.



Comcast - Simulating shitty network connections so you can build better systems.

JSON Server is a full fake REST API with zero coding in less than 30 seconds Created with <3 for front-end developers who need a quick back-end for prototyping and mocking.

json-server - Get a full fake REST API with zero coding in less than 30 seconds

CodeceptJS is a new testing framework for end-to-end testing with WebDriver (or others). It abstracts browser interaction to simple steps that are written from a user perspective. It is synchronous where you don't need to care about callbacks, or promises, test scenarios are linear. 
Run your tests via Playwright, WebDriver, Puppeteer, TestCafe, Protractor, Appium. The code is the same.
<ul>
<li>Based on <a href="https://mochajs.org/" rel="nofollow">Mocha</a> testing framework.</li>
<li>Designed for scenario driven acceptance testing in BDD-style</li>
<li>Uses ES6 natively without transpiler.</li>
<li>Also plays nice with TypeScript.</li>
<li>Smart locators: use names, labels, matching text, CSS or XPath to locate elements.</li>
<li>Interactive debugging shell: pause test at any point and try different commands in a browser.</li>
<li>Easily create tests, pageobjects, stepobjects with CLI generators.</li>
</ul>

CodeceptJS is a new testing framework for end-to-end testing with WebDriver (or others). It abstracts browser interaction to simple steps that are written from a user perspective. It is synchronous where you don't need to care about callbacks, or promises, test scenarios are linear. 
Run your tests via Playwright, WebDriver, Puppeteer, TestCafe, Protractor, Appium. The code is the same.

CodeceptJS - Supercharged End 2 End Testing Framework for NodeJS

OneFuzz framework, an open source developer tool to find and fix bugs at scale. Fuzz testing is a highly effective method for increasing the security and reliability of native code—it is the gold standard for finding and removing costly, exploitable security flaws. Traditionally, fuzz testing has been a double-edged sword for developers: mandated by the software-development lifecycle, highly effective in finding actionable flaws, yet very complicated to harness, execute, and extract information from.  

OneFuzz - A self-hosted Fuzzing-As-A-Service platform

CasperJS is a navigation scripting & testing utility for PhantomJS. It eases the process of defining a full navigation scenario and provides useful high-level functions, methods & syntaxic sugar for doing common tasks such as browsing navigation steps, 
filling & submitting forms, clicking & following links, capturing screenshots, logging events, etc

CasperJS - Navigation Scripting & Testing Utility for PhantomJS

Japa is an API-first testing framework. It focuses only on testing Node.js (backend) applications, thus resulting in a fast, small, and simple tests runner. 
<ul>
<li>Support for <a href="https://japa.dev/grouping-tests" rel="nofollow">test groups</a>, timeout, todo tests and <a href="https://japa.dev/underlying-test-class#fails" rel="nofollow">regression tests</a>.</li>
<li>Support for <a href="https://japa.dev/datasets" rel="nofollow">Datasets</a>.</li>
<li>Assertion libraries with support for <a href="https://japa.dev/assertion-planning" rel="nofollow">assertion planning</a>.</li>
<li>Ability to <a href="https://japa.dev/filtering-tests" rel="nofollow">filter</a> and run specific or only failing tests.</li>
<li>Re-imagined <a href="https://japa.dev/lifecycle-hooks" rel="nofollow">lifecycle hooks</a>.</li>
<li>Multiple <a href="https://japa.dev/plugins/spec-reporter" rel="nofollow">reporters</a> to display tests progress.</li>
<li>Great CLI experience with pretty diffs and formatted error stacks.</li>
<li>Works with <strong>ESM</strong> and <a href="https://japa.dev/usage-with-typescript" rel="nofollow">TypeScript</a> both with zero additional setup.</li>
</ul>

Japa is an API-first testing framework. It focuses only on testing Node.js (backend) applications, thus resulting in a fast, small, and simple tests runner. 

Japa - API-first testing framework

Growth Book is an open source experimentation platform designed for companies that want to bring A/B testing in-house, but don't want to build it themselves. It supports experimentation with deep code integration or using a visual front-end editor. 

GrowthBook - The Open Source A/B Testing Platform

Randoop generates unit tests using feedback-directed random test generation. This technique pseudo-randomly, but smartly, generates sequences of method/constructor invocations for the classes under test. Randoop executes the sequences it creates, using the results of the execution to create assertions that capture the behavior of your program. Randoop creates tests from the code sequences and assertions. 
<BR><BR>
 Randoop can be used for two purposes: to find bugs in your program, and to create regression tests to warn you if you change your program's behavior in the future. 

Randoop generates unit tests using feedback-directed random test generation. This technique pseudo-randomly, but smartly, generates sequences of method/constructor invocations for the classes under test. Randoop executes the sequences it creates, using the results of the execution to create assertions that capture the behavior of your program. Randoop creates tests from the code sequences and assertions. 

Randoop - Automatic test generation for Java

Pown.js is a security testing and exploitation toolkit built on top of Node.js and NPM. Unlike traditional security tools like Metasploits, Pown.js considers frameworks to be an anti-pattern. Therefore, each module in Pown is in fact a standalone NPM module allowing greater degree of reuse and flexibility. Creating new modules is a matter of publishing to NPM and tagging it with the correct tags. The rest is handled automatically.

Pown.js - Security testing and exploitation toolkit built on top of Node.js and NPM

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