2D/3D Scene Graph rendering engine for Linux/Unix/Win32 layered atop OpenGL. Supports stereoscopy, volume rendering, 2D/3D texture mapping, picking, LOD and view-dependent operations, cross-platform text, constant-rate rendering and image-based data.

开源的atop: linux下的类top监控工具，比top的功能强一些。 主要从/proc中取信息处理并显示。 -Open source atop: linux monitoring tools under the top of the class, some stronger than the top of the feature. Mainly from/proc to take in information processing and display.