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Mocha is a popular test framework.
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Civic Auth
Auth in Less Than 5 Minutes. Civic Auth comes with multiple SSO options, optional embedded wallets, and user management — all implemented with just a few lines of code. Start building today.
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Yeoman Scaffolding tool from the command-line.
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node-unit is another relatively traditional unit testing framework.
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ava
Discontinued Node.js test runner that lets you develop with confidence 🚀 [Moved to: https://github.com/avajs/ava] (by sindresorhus)
AVA is a new test runner with Babel built-in and runs tests concurrently.
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TypeScript makes JavaScript considerably more bearable, while also keeping you out of trouble!
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danf
Danf is a Node.js full-stack isomorphic OOP framework allowing to code the same way on both client and server sides. It helps you to make deep architectures and handle asynchronous flows in order to help in producing scalable, maintainable, testable and performant applications.
Danf is a full-stack OOP framework providing many features in order to produce a scalable, maintainable, testable and performant applications and allowing to code the same way on both the server (Node.js) and client (browser) sides.
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jade
Discontinued Pug – robust, elegant, feature rich template engine for Node.js [Moved to: https://github.com/pugjs/pug] (by visionmedia)
Jade is the HAML/Slim of the Node.js world
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SurveyJS
JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Add the SurveyJS white-label form builder to your JavaScript app (React/Angular/Vue3). Build complex JSON forms without coding. Fully customizable, works with any backend, perfect for data-heavy apps. Learn more.
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Underscore contains just about every core utility method you want.
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ejs
Discontinued Embedded JavaScript templates for node [Moved to: https://github.com/tj/ejs] (by visionmedia)
EJS is a more traditional templating language.
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request
Discontinued 🏊🏾 Simplified HTTP request client. [Moved to: https://github.com/request/request] (by mikeal)
Request is a very popular HTTP request library.
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socket.io
Discontinued Realtime application framework (Node.JS server) [Moved to: https://github.com/socketio/socket.io] (by LearnBoost)
socket.io is handy for building WebSocket servers.
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Trails is a modern web application framework. It builds on the pedigree of Rails and Grails to accelerate development by adhering to a straightforward, convention-based, API-driven design philosophy.
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minimist just command line argument parsing.
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Loopback.io is a powerful Node.js framework for creating APIs and easily connecting to backend data sources. It has an Angular.js SDK and provides SDKs for iOS and Android.
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yargs
Discontinued yargs the modern, pirate-themed successor to optimist. [Moved to: https://github.com/yargs/yargs] (by bcoe)
Yargs is a powerful library for parsing command-line arguments.
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Commander.js is a complete solution for building single-use command-line applications.
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Lo-Dash is a clone of Underscore that aims to be faster, more customizable, and has quite a few functions that underscore doesn't have. Certain versions of it can be used as drop-in replacements of underscore.
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Koa is a new web framework designed by the team behind Express.js, which aims to be a smaller, more expressive, and more robust foundation for web applications and APIs.
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JSHint is a code-checking tool that'll save you loads of time finding stupid errors. Find a plugin for your text editor that will automatically run it on your code.
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Vorpal.js is a framework for building mature, immersive command-line applications.
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Trails is a modern web application framework. It builds on the pedigree of Rails and Grails to accelerate development by adhering to a straightforward, convention-based, API-driven design philosophy.
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Chalk makes your CLI output pretty.
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Express.js is by far the most popular framework.
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mississipi everything you miss about streams.
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derby
MVC framework making it easy to write realtime, collaborative applications that run in both Node.js and browsers
Derbyjs is a reactive full-stack JavaScript framework. They are using patterns like reactive programming and isomorphic JavaScript for a long time.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.