AGi32 and DIALux are probably tje most common. DIALux can be used for free whereas AGi32 typically requires a licence. if using LED, don't forget to look at the circuits which are typically have much lower amerage and voltage drop requirements than HID
I would recommend DIALux, as not only it has quite understandable interface, but also it is free. Also it is one of the most commonly used programs, so if you will have a further question in future or need for a tutorial etc. , you can easily find any kind of information.