Creating applications with Reactor requires an ActionScript 3.0 compiler, which is available in the following products:
- Adobe Flash CS4+ (Flash CS3 is not supported)
- Adobe Flash Builder 4+
- Adobe Flex Builder 3
- Adobe Flex Framework 3+
- Flash Develop
Running Reactor applications requires Adobe Flash Player 9 or higher.
Client applications built with Reactor require access to Union Server, which is available for free for up to 1000 simultaneous users. A public test server is available for experimentation and evaluation at tryunion.com, port 80.