Ok, here is how you get each of them to work:
Developer.exe -> there is a seperate link to the latest developer.exe files which is below the main files, you have to copy the cotents of the developer folder into the Main program folder
Particle forge -> copy and paste the contents of the folder into the Main program folder, cuase it needs some of the dll that are in the main program folder
Galaxy Forge -> as long as the icons folder and the galaxyserinodef file are in there you can run it ferom the that folder immediately