Develop engaging extensions faster

Build and debug Creative Suite and Creative Cloud extensions in less time.

What is Adobe Extension Builder?

Adobe® Extension Builder 2.1 is a powerful Eclipse™ based development tool that provides a simple way to develop, debug, and package native and Adobe Flash® technology–based extensions that run inside and integrate with Creative Suite and Creative Cloud applications.

Important: Extensibility is changing. Learn More ›

Top features

Creative Suite and Creative Cloud multiple version support (CS5/5.5/6/Creative Cloud)

Select the version of Creative Suite/Creative Cloud you want to target and Extension Builder 2.1 works out the compatible features available for that version. Run your existing Flex 3.4 extensions in CS6 or create new Flex 4.5 extensions that leverage newer extensibility technologies.

A new way to sell and distribute with Adobe Exchange

Reach Creative Suite and Adobe Creative Cloud™ users with Adobe Exchange, a new way to promote, distribute, and sell the extensions you create.

Extension debugging directly in Creative Suite and Creative Cloud applications

Use the Debug As and Attach As features to debug directly in Creative Suite and Creative Cloud applications, preview extensions, set breakpoints, and identify errors.

Related products

Flash Builder
Extension Manager
Creative Suite SDK

Digital Enterprise Platform
Creative Suite

Showcase

TypeDNA
TypeDNA is on a mission to encourage the use of good typography among designers. The key to fulfilling this goal is the development of the TypeDNA Font Manager as an Adobe Creative Suite extension.

Blog

06/29/2015    Get Creative Cloud 2015 Add-ons support now!
06/29/2015    Adobe Exchange Panel CS6 users: it’s time to move to Adobe Add-ons
06/23/2015    Introducing CEP 6
11/05/2014    How to: Choose which Creative Cloud shared folders you sync