I found this program awhile ago and thought you guys might want to check it out. It has all sorts of add ons including a Hex Editor.
Check it all out at
I originally got it from a program I downloaded so I've only used it pretty much as normal notepad and I only found out about these add ons today so I have not tested them to see how well they work but I assume they work fairly well.
Have fun with this and if anyone says this has been posted I'm sry but I didn't see it in search so I posted it.