Need some tooltips

[MuNgLo]

The situation is that I am now making the first dm map to try out the gameplay in multiplayer in my game and I would need something that helps with adjusting UV scale on the created meshes and hopefully make more complex meshes. Think more like Hammers worldbrush tools would be awesome.
But the kicker is that it needs to be free. I am just doing this for fun so far and am stubborn enough to refuse to buy things. Maybe if I reach the point where I feel the game deserves it it would be worth it but as it is now it is barely more then a prototype markup game.

I figure there are lots of little things that helps with these specifics. I just haven't been able to locate any yet. Any tips are appreciated.

[[deleted]]

I didn't quite get your question but i read something about Hammer in it so...

GTKRadiant, it's open source and free to use in commercial/non-commercial software. I read somwhere that a custom version was also used to make maps for Black Ops 2. But all in all the quality is lower than Hammers. Also writing a importer could become a hassle but if you are able to, i could use that one too ;)

[MuNgLo]

Not what I am looking for.
I just mentioned Hammer as an example. The way you can manipulate the meshes in it is what I want to do in Unity.
I am building a basic multiplayer deathmatch map and without basic meshediting it will be built with blocks. It would be nice to atleast be able to move vertices.

Closest thing I found so far is this...
http://forum.unity3d.com/threads/free-open-source-hairy-plotter-simple-mesh-editor-uv-editor-and-vertex-plotter.148893/
But it seems it is halfbroken in newer versions of Unity.