Collect, test, and experiment with interface pattern pairings of CSS & HTML. Pears is an open source WordPress theme, enabling people like you to get your own pattern library up and running quickly.

Kendo UI is a framework for modern HTML UI. Engineered with the latest HTML5, CSS3, and JavaScript standards, it delivers everything needed for client-side, jQuery-powered development in one integrated, compact package.

A curated catalog of iOS frameworks and classes for the pragmatic iOS developer

UIKit for Mac development

Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

Sparrow - an Open Source Framework for iPhone Game Development (via @mrnhim)

The Dev Guide is a practical introduction to developing applications for Android. It explores the concepts behind Android, the framework for constructing an application, and the tools for developing, testing, and publishing software for the platform.

A detailed guide

FAT-FREE is a powerful modular and lightweight PHP 5.3+ Web application framework designed to help build dynamic and robust Web sites

Uki is a fast and simple JavaScript user interface toolkit for desktop-like web applications.
It comes with a rich view-component library ranging from Slider to List and SplitPane.

Padrino is a ruby framework built upon the excellent Sinatra Microframework. Sinatra is a DSL for quickly creating simple web applications in Ruby. Padrino was created to make it fun and easy to code more advanced web applications while still adhering to the spirit that makes Sinatra great!

Kohana 3 Guide

Hybrid is a user-friendly, search-engine optimized theme framework, featuring 15 custom page templates and 8 widget-ready areas, allowing you to create any type of site you want.

InAppSettingsKit is an open source solution to to easily add in-app settings to your iPhone apps. It uses a hybrid approach by maintaining the Settings.app pane. So the user has the choice where to change the settings.

Welcome to The 14 Days of jQuery! We're excited to bring you fourteen consecutive days of new releases to celebrate the release of jQuery 1.4. You'll notice that we're excited about the number fourteen since jQuery 1.4 is being released on the birthday of jQuery (January 14th) . So be sure to come back each day as another announcement is made and new content is released!

XUI strives to be a framework for first class mobile device browsers such as WebKit, Fennec and Opera with future support under consideration for IE Mobile and BlackBerry.

Monk is a glue framework for web development in Ruby. It’s truly modular by relying on the best tool for each job. It’s also pretty fast thanks to Rack and Sinatra.

Easy is a CSS/HTML/JavaScript framework started as a personal project and then grew into something more. The idea behind it is to reduce the amount of time spent on setting up the basic master HTML template by reusing the same coding techniques.

RightJS is a new JavaScript framework. It takes many old, battle proven features, wraps them nicely, mixes with some new ideas and features, and as the result provides a tiny, fast and easy to use tool.

Yet another CSS framework, without typography, form styles, etc.

List of Django gotchas

Should be called "18 Mobile Frameworks and Dev Tools for Creating iPhone Web Apps".

A 50 LOC Javascript animation framework by Thomas Fuchs. Followed up blog post & slideshow at http://mir.aculo.us/2009/11/07/a-50-lines-of-code-javascript-animation-framework-say-hello-to-emile/

CakePHP 3

Danh sách một số framework PHP nhỏ gọn về mặt dung lượng

Thư viện JS mã nguồn mở của BBC, hỗ trợ cả những trình duyệt cổ như IE 5.5 và Safari 1.3

Từ social APIs đến các thư viện về networking và web service

Một số element thông dụng cho Cocoa app

Dài. Rất dài.

(Thêm) 1 framework cho PHP tương tự Sinatra

"Web framework" bằng PHP với ít hơn 140 ký tự. Tagline: "Twitto không hề an toàn. Đừng dùng nó cho trang web kế tiếp của bạn"

Framework để code giao diện HUD cho ứng dụng Cocoa

Công cụ rất hữu ích cho việc thiết kế web

Bookmarklet cho phép xác định trang web bạn đang truy cập sử dụng JS framework nào. Hỗ trợ script.aculo.us, Dojo Toolkit, Mochikit, YUI, jQuery, base2...