D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG and CSS. D3’s emphasis on web standards gives you the full capabilities of modern browsers without tying yourself to a proprietary framework, combining powerful visualization components and a data-driven approach to DOM manipulation.
Rickshaw is a JavaScript toolkit for creating interactive time series graphs.
A javascript date library for parsing, validating, manipulating, and formatting dates.
localForage is a handy library that improves the offline experience of your web app by using asynchronous storage (via IndexedDB or WebSQL where available) but with a simple, localStorage-like API.
polyfill makes web development less frustrating by selectively polyfilling just what the browser needs. Use it on your own site, or as a service.
Upton is a framework for easy web-scraping with a useful debug mode that doesn't hammer your target's servers. It does the repetitive parts of writing scrapers, so you only have to write the unique parts for each site.
A JavaScript library for building user interfaces
Headroom.js is a lightweight, high-performance JS widget (with no dependencies!) that allows you to react to the user's scroll.
TextBlob is a Python (2 and 3) library for processing textual data. It provides a simple API for diving into common natural language processing (NLP) tasks such as part-of-speech tagging, noun phrase extraction, sentiment analysis, classification, translation, and more.
Vex is a modern dialog library which is highly configurable, easily stylable, and gets out of the way. You'll love vex because it's tiny (6kb minified), has a clear and simple API, works on mobile devices, and can be customized to match your style in seconds.
Every javascript project you should be looking into.
With examples, categories, install commands, CDN links, project and author stats, and more.
TogetherJS is a free, open source JavaScript library by Mozilla that adds collaboration features and tools to your website. By adding TogetherJS to your site, your users can help each other out on a website in real time!
Scrapy is a fast high-level screen scraping and web crawling framework, used to crawl websites and extract structured data from their pages. It can be used for a wide range of purposes, from data mining to monitoring and automated testing.
JSDB is a collection of the best javascript libraries
howler.js is an audio library for the modern web. It defaults to Web Audio API and falls back to HTML5 Audio.
A minimalist database toolkit for PHP5.
Object relational mapper (ORM), fluent SQL query builder and Active Record implementation for PHP.
Pimple is a small Dependency Injection Container for PHP 5.3 that consists of just one file and one class (about 50 lines of code).
pyo is a Python module written in C to help digital signal processing script creation.
A dynamic layout plugin for jQuery
The flip-side of CSS floats
Smaller, Lighter, Faster, more modular jQuery - include only the parts you want! Don't use it, Don't include it.