openFrameworks is an open source C++ toolkit designed to assist the creative process by providing a simple and intuitive framework for experimentation. The toolkit is designed to work as a general purpose glue, and wraps together several commonly used libraries, including:

OpenGL, GLEW, GLUT, libtess2 and cairo for graphics
rtAudio, PortAudio or FMOD and Kiss FFT for audio input, output and analysis
FreeType for fonts
FreeImage for image saving and loading
Quicktime and videoInput for video playback and grabbing
Poco for a variety of utilities

The Siren system is an open-source general-purpose software framework for sound and music composition and production; it is a collection of about 375 classes written in the Smalltalk programming language and intended for use with for the VisualWorks Smalltalk system. Siren includes cross-platform support for MIDI and audio I/O; the source code and documentation files are all available via the down-load links below.

Turning Pure Data into an embeddable audio synthesis library

Grok is a web application framework for Python developers. It is aimed at both beginners and very experienced web developers. Grok has an emphasis on agile development. Grok is easy and powerful

Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library.

Bottle.py: An entire web-framework packaged in a single Python module. Bottle bills itself as a micro-framework, fast, simple and lightweight. Having had a chance to play around with it, I can testify to this. It makes a superb development server, among other things. After previous battles with Zope/Plone it’s pretty incredible to get a server up and serving pages in a few lines of Python, with one imported module.

Noir is a micro-framework that allows you to rapidly develop websites in Clojure.
And it couldn't be any simpler.

processing.py
Write Processing sketches in Python. Jonathan Feinberg <jdf@pobox.com>

It has been several years that Mac OS X developer were able to create Cocoa application using the Python language. Here is my own experience with a few projects that I have created during the CS 662 class and a little tutorial on how to get started with Xcode, Cocoa and Python.

There are numerous situations where creating your own framework is advantageous.

This topic guide attempts to cover every aspect of programming Web applications (both clients and servers) using Python.

Scrum is an agile framework for completing complex projects. Scrum originally was formalized for software development projects, but works well for any complex, innovative scope of work.

TurboGears will help you to create a database-driven, ready-to-extend application in minutes. All with designer friendly templates, easy AJAX on the browser side and on the server side, with an incredibly powerful and flexible Object Relational Mapper (ORM), and with code that is as natural as writing a function.

a framework for rapidly developing Web sites, which is based on the Django framework. Pinax allows a user to rapidly create a Web site including an authentication system (OpenID), social network community, blogs, contact import, and many other features that one might want in a Web site readily available.

Pylons combines the very best ideas from the worlds of Ruby, Python and Perl, providing a structured but extremely flexible Python web framework. It's also one of the first projects to leverage the emerging WSGI standard, which allows extensive re-use and flexibility but only if you need it. Out of the box, Pylons aims to make web development fast, flexible and easy.

Backbone supplies structure to JavaScript-heavy applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing application over a RESTful JSON interface.

Tornado is an open source version of the scalable, non-blocking web server and tools that power FriendFeed. The FriendFeed application is written using a web framework that looks a bit like web.py or Google's webapp, but with additional tools and optimizations to take advantage of the underlying non-blocking infrastructure.

Today, we are open sourcing the non-blocking web server and the tools that power FriendFeed under the name Tornado Web Server. We are really excited to open source this project as a part of Facebook's open source initiative, and we hope it will be useful to others building real-time web services. Check out the announcement on the Facebook Developer Blog. You can download Tornado at tornadoweb.org.

As part of Facebook’s open source initiative, the company is today releasing the web framework that powers the real-time functionality of recently acquired FriendFeed as an open source tool.

Introducing the Appcelerator Titanium Development Platform

Titanium makes cross-platform native application development easy.
A free and open source application development platform, Titanium lets you create native mobile, tablet and desktop application experiences using existing web skills like Javascript, HTML, CSS, Python, Ruby, and PHP.

CodeIgniter is a powerful PHP framework with a very small footprint, built for PHP coders who need a simple and elegant toolkit to create full-featured web applications.

The webapp framework is a simple web application framework you can use for developing Python web applications for App Engine. webapp is compatible with the WSGI standard for Python web application containers. webapp provides an easy way to get started developing apps for App Engine.
You don't have to use webapp to write Python applications for App Engine. Other web application frameworks, such as Django, work with App Engine, and App Engine supports any Python code that uses the CGI standard.

web.py is a web framework for python that is as simple as it is powerful. web.py is in the public domain; you can use it for whatever purpose with absolutely no restrictions.

Shoes is a cross-platform toolkit for writing graphical apps easily and artfully using Ruby.
Unlike most other GUI toolkits, Shoes is designed to be easy and straightforward without losing power. Really, it’s easy!

Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions. And before you ask: It's BSD licensed!

Sass makes CSS fun again. Sass is an extension of CSS3, adding nested rules, variables, mixins, selector inheritance, and more. It’s translated to well-formatted, standard CSS using the command line tool or a web-framework plugin.

Compass is a stylesheet authoring framework that makes your stylesheets and markup easier to build and maintain. With compass, you write your stylesheets in Sass instead of CSS.

SproutCore is an HTML5 application framework for building responsive, desktop-caliber apps in any modern web browser, without plugins.

... it includes a cross-platform class library, integrated development tools and a cross-platform IDE. Using Qt, you can write web-enabled applications once and deploy them across many desktop and embedded operating systems without rewriting the source code.

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

ParseKit is a Mac OS X Framework written by Todd Ditchendorf in Objective-C 2.0 and released under the MIT Open Source License. ParseKit is suitable for use on Mac OS X Leopard, Snow Leopard or iPhone OS. ParseKit is an Objective-C implementation of the tools described in "Building Parsers with Java" by Steven John Metsker. ParseKit includes additional features beyond the designs from the book and also some changes to match common Cocoa/Objective-C conventions. These changes are relatively superficial, however, and Metsker's book is the best documentation available for ParseKit.

The Cocoa and Cocoa Touch frameworks that power Mac OS X and iPhone OS are tightly integrated into the Xcode development experience. Cocoa’s high-level APIs make is easy to add animation, networking, and the native platform appearance and behavior to your application with only a few lines of code.

MooTools is a compact, modular, Object-Oriented JavaScript framework designed for the intermediate to advanced JavaScript developer. It allows you to write powerful, flexible, and cross-browser code with its elegant, well documented, and coherent API.

Cappuccino is an open source framework that makes it easy to build desktop-caliber applications that run in a web browser.

openFrameworks is an open-source tool and C++ framework for creative programming. Especially created for artists and designers, openFrameworks is the ideal starting point for those who want to take their first steps in C++ programming. At the same time, it is an immensely powerful tool for developing more advanced projects, providing a simple and intuitive structure for experimentation with many other open-source libraries.

A user interface control to record key combinations. For Mac OS X, uses Cocoa.

Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.

Chandrasekhar Ramakrishnan:

Sycamore ist ein in Objective-C geschriebene Framework für die Entwicklung von Audiosoftware auf MacOS X. Sycamore vereinfacht vor allem den Umgang mit CoreAudio und AudioUnits von Cocoa.

Sycamore wird vom ZKM | Institut für Musik und Akustik Karlsruhe unter einer FreeBSD Lizenz veröffentlicht.
Chandrasekhar Ramakrishnan:
Sycamore

-> English version

Sycamore ist ein in Objective-C geschriebene Framework für die Entwicklung von Audiosoftware auf MacOS X. Sycamore vereinfacht vor allem den Umgang mit CoreAudio und AudioUnits von Cocoa.

Sycamore wird vom ZKM | Institut für Musik und Akustik Karlsruhe unter einer FreeBSD Lizenz veröffentlicht.

Illposed Software is an interdisciplinary collective of multimedia artists and technologists. We work in sound and image; we theorize. We create software to realize our projects and make our ideas concrete.
Chandrasekhar Ramakrishnan Software Developer

openFrameworks is an open source C++ toolkit for creative coding.

Built with typographic standards in mind, Baseline makes it easy to develop a website with a pleasing grid and good typography. Baseline starts with several files to reset the browser’s default behavior, build a basic typographic layout — including style for HTML forms and new HTML 5 elements — and build a simple grid system. Baseline was born to be a quick way to prototype a website and grew up to become a full typographic framework for the web using “real” baseline grid as it’s foundation.

Rack provides a minimal interface between webservers supporting Ruby and Ruby frameworks.