Tinia is a C++ platform designed to make it easy creating applications that can run both on desktops and on servers, potentially in the cloud. It is primarily focused on applications doing rendering with OpenGL and compute intensive programs using CUDA/OpenCL, but it can be used for most any application area.
The only difference between a cloud application and a desktop application is just a few lines of code. This means the applications can be developed with all the usual debugging tools available on the desktop, making sure the program is running as it should before deploying on your servers.
Compilation and installation instructions are available on the Wiki, the ones on www.tinia.org are unfortunately outdated.
The API-reference and tutorials is available at http://doc.tinia.org