DOM Monster is a cross-platform, cross-browser bookmarklet that will analyze the DOM & other features of the page you're on, and give you its bill of health.
Add Clippy or his friends to any website for instant nostalgia.
ApiGen is the tool for creating professional API documentation from PHP source code, similar to discontinued phpDocumentor/phpDoc.
Sample module for Python-Guide.org
This opinionated guide exists to provide both novice and expert Python developers a best-practice handbook to the installation, configuration, and usage of Python on a daily basis.
Build Desktop Applications for Linux, Mac and Windows using HTML, CSS and Javascript
Sami: an API documentation generator
Sprite Cow helps you get the background-position, width and height of sprites within a spritesheet as a nice bit of copyable css.
web.go is the simplest way to write web applications in the Go programming language. It's ideal for writing simple, performant backend web services.
The Kartograph map generator has just one method, which is there to generate SVG maps (surprise).
Diagramo is an online flowchart software.
Meteor is an ultra-simple environment for building modern websites.
An easy to use, powerful, and flexible framework for building prototypes and production code on any kind of device.
Feedity is an online data extraction tool and RSS feed builder
Liquibase is an open source database-independent library for tracking, managing and applying database schema changes
Natural is a general natural language facility for nodejs. Tokenizing, stemming, classification, phonetics, tf-idf, WordNet, string similarity, and some inflection are currently supported.
Filtrr2 is a JavaScript image manipulation library. Think of it as Instagram filters on the browser. It uses the <canvas> element to paint filtered pictures in the place of normal pictures on your website.
Different map tiles
Python based delicious.com replacement
Pyramid is a very general open source Python web framework.