Map Design

Most developers create their own map building tools. If you prefer, you could use a standard tool like 3ds max, Maya, Blender, etc., and output to a format your engine supports, which of course will have to be implemented — ASCII scene (.ASE) is probably the easiest format to parse, as it's readable as plain-text — or you could implement an existing proprietary format — for example, id's non-compiled Radiant format (.MAP) is fairly easy to understand — and use the corresponding editor — all Radiant games (Doom 3, Quake 4, Prey) have QRadiant built into the game executables). Hope this helps.

big help so thanks
but i did not find them to download them
can u put trial link of them?

I don't know any links
but just go to google.com and I sure you will definetly find something. Here is a link i've found for you http://pt.wikipedia.org/wiki/Maya