This software is a simple, yet flexible server of raster map products, compliant with the OGC WMS 1.1.1 protocol. The server is a full implementation of the OGC WMS 1.1.1 as a fastCGI client and using GDAL for data access. The server can operate in a proxy mode, where all or part of the WMS requests are done on a back server.
The server has explicit support for a colocated tiled WMS, including rapid response of black (no-data) requests. It generates JPEG and PNG images, including 16-bit PNG. The GDAL backend support allows great flexibility on the data access.
The server is a port to a Linux/GDAL platform from the original IRIX/IL platform. It is simpler to configure and use, and depending on the storage format used, it has better performance than other available implementations.
The WMS server 2.0 is a high-performance WMS implementation due to the fastCGI architecture. The use of GDAL data back end allows for great flexibility. The configuration is relatively simple, based on a single XML file. It provides scaling and cropping, as well as blending of multiple layers based on layer transparency.