Adobe Flash Builder includes an interactive debugger, allowing developers to step through code execution while inspecting variables and watching expressions.

The profiling view displays statistical information about memory use in addition to function call execution time.

The name change is meant to signify its connection to other products in the Adobe Flash Platform[4] and to create a clear distinction between the open source free Flex SDK and the IDE.

[5] Macromedia targeted the enterprise application development market with its initial releases of Flex 1.0 and 1.5.

The core Flex 2 SDK, consisting of the command-line compilers and the complete class library of user interface components and utilities, was made available as a free download.

Adobe based the new version of Flex Builder on the open source Eclipse platform.

Some themes that have incorporated into Flex 4: Flash Builder is available in two versions: Standard and Premium,[11] the premium adds the following features; May 3, 2011, Adobe shipped Flash Builder 4.5 copying Flex 4.5 (SDK Only) which delivers full support for building Flex and ActionScript applications for Google Android, as well as support for building ActionScript applications for BlackBerry Tablet OS and Apple iOS.