xip.io is a magic domain name that provides wildcard DNS for any IP address.

Command Line Interface Formulation Framework. cliff is a framework for building command line programs. It uses plugins to define sub-commands, output formatters, and other extensions.

an open source rich text editor based on HTML5 technology and the progressive-enhancement approach.

Principles of Writing Consistent, Idiomatic JavaScript

Principles of writing consistent, idiomatic CSS

A JavaScript framework for creating ambitious web applications

Alembic is a new database migrations tool, written by the author of SQLAlchemy.

This tool helps to combine iconic webfonts for your project.

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.