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Coveralls works with your CI server and sifts through your coverage data to find issues you didn't even know you had before they become a problem. Free for open source, pro accounts for private repos, instant sign up with GitHub OAuth. | npm is the command-line interface to the npm ecosystem. It is battle-tested, surprisingly flexible, and used by hundreds of thousands of JavaScript developers every day. |
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GitHub Stars - | GitHub Stars 17.6K |
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Stacks 1.7K | Stacks 137.4K |
Followers 278 | Followers 82.2K |
Votes 68 | Votes 1.6K |
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RequireJS loads plain JavaScript files as well as more defined modules. It is optimized for in-browser use, including in a Web Worker, but it can be used in other JavaScript environments, like Rhino and Node. It implements the Asynchronous Module API. Using a modular script loader like RequireJS will improve the speed and quality of your code.

Browserify lets you require('modules') in the browser by bundling up all of your dependencies.

Yarn caches every package it downloads so it never needs to again. It also parallelizes operations to maximize resource utilization so install times are faster than ever.

Our patrons rave about our elegant coverage reports, integrated pull request comments, interactive commit graphs, our Chrome plugin and security.

Component's philosophy is the UNIX philosophy of the web - to create a platform for small, reusable components that consist of JS, CSS, HTML, images, fonts, etc. With its well-defined specs, using Component means not worrying about most frontend problems such as package management, publishing components to a registry, or creating a custom build process for every single app.

A simple, zero-config-required local private npm registry. Comes out of the box with its own tiny database, and the ability to proxy other registries (eg. npmjs.org), caching the downloaded modules along the way.

It is the package installer for Python. You can use pip to install packages from the Python Package Index and other indexes.

Duo is a next-generation package manager that blends the best ideas from Component, Browserify and Go to make organizing and writing front-end code quick and painless.

It is a new kind of package registry for the modern web. It handles formatting, configuring, building and publishing every package on the registry, so that individual authors don't have to.

It provides a consistent environment for Ruby projects by tracking and installing the exact gems and versions that are needed. It is an exit from dependency hell, and ensures that the gems you need are present in development, staging, and production.