EL SDK es un programa para crear mapas,mods y mucho mas solo para tu Counter Strike Source Incluye el SP1 y Contiene :  EVOLUTiON CSM SourceSDK SP1 includes:  SourceSDK (v.17):  -Hammer Editor  -Model Viewer  -Face Poser  etc.  Compiling / DeCompiling:  -TCG Compiler  -CST GUI Compiler  -Batch Compiler  -VMEX DeCompiler  Content Manage:  -PakRat  -EntSpy  -Map Analyst MAN  -WinBSPZip  -GCFScape  Texturing:  -VTF Explorer  -VTF Edit  -VTF Tool  -VTEX GUI  -VMT Create  -Normal Map Generator  -AUTO SEAMER  Modeling:  -Studio Compiler  -GUI StudioMDL  Other:  -Custom Source Tools 1.1 (Compilers to BSP 19. HDR not supported)  -cstrike-gflyer108.fgd  -VTF Shell Extensions  -VTF Format (Plug-in will be installed for all founded on your computer versions of Photoshop)  -Game Configuration Manager (Exclusive for REV SDK )  Contenido de SP2 :  REVOLUTiON CSM SourceSDK SP2 includes:  SourceSDK (Version 1.08.00):  -Hammer Editor  -Model Viewer  -Face Poser  etc.  Compiling / DeCompiling:  -TCG Compiler  -CST GUI Compiler  -Batch Compiler  -VMEX DeCompiler  Content Manage:  -PakRat  -EntSpy  -Map Analyst MAN  -WinBSPZip  -GCFScape  Texturing:  -VTF Explorer  -VTF Edit  -VTF Tool  -VTEX GUI  -VMT Create  -Normal Map Generator  -AUTO SEAMER  Modeling:  -Studio Compiler  -GUI StudioMDL  Otros:  -Custom Source Tools (CST) 1.1 compilers (Compiles to BSP 19)  -cstrike-gflyer108.fgd (Modified FGD for CSS)  -VTF Shell Extensions (VTF material thumbs in Explorer)  -VTF Format (Plug-in will be installed for all founded on your computer versions of Photoshop)  -Game Configuration Manager (Exclusive for REV SDK)  pero aqui les dejamos las version SP3 que la puedes descargar de aqui:  http://www.mediafire.com/?nz4zdzmvfyd