ColdFusion

a lightweight, convention over configuration, MVC application framework

A native Selenium RC binding for ColdFusion

xUnit style unit testing framework

watch a directory for file changes (.cfc, .cfm, .xml) to trigger mxunit test suite full run, displaying results in the console

BDD style unit testing framework

ColdSpring makes the configuration and dependencies of your CFCs easier to manage. ColdSpring brings the power of the popular Spring framework for Java to ColdFusion.

a very lightweight, convention over configuration, dependency injection (inversion of control) framework

A powerful modular content management engine

an open source CMS for the Railo language

ArangoDB client for ColdFusion

Couchbase NoSQL and caching client wrapper for ColdFusion

MongoDB client wrapper for ColdFusion

Back porting features contained in newer versions of ColdFusion.

ColdFusion payment processing library makes plumbing e-commerce apps easy. Charging credit cards has never been easier. Inspired by Ruby's ActiveMerchant.

Exception Tracking

JavaLoader is a library that has been built to ease the use, development and integration of Java within ColdFusion applications.

Moment.js inspired date/time manipulation library for CFML (not a direct port)

{{ mustache }} for ColdFusion

An UnderscoreJS port for Coldfusion. Functional programming library.

CFML syntax highlighting as well as function and tag completions for Sublime Text 3

CFML Language plugin for Atom

Java IDE, CFML Support available via plugin

TextMate support for ColdFusion

The ColdFusion Koans are a set of unit tests that the user must make pass by filling in values

A list of articles demonstrating how to do UI with ColdFusion on the back end.

CFML Tag to Script Conversions by Tony Junkes

CFScript Documentation by Adam Cameron

Official Railo docs