monoGIS will be a complete GIS suite for the Mono platform. The current milestone release includes an internet mapserver, OGC WMS implementation and some tools like spatial format conversion. For other projects using monoGIS see mdwglib and Appomattox.
Source code in C# for wrapper classes for ShapeLib.dll (http://shapelib.maptools.org): a library for reading and writing shape files ( shp shx and dbf).
A Map Server, Viewer & Editor partially implementing the W3 standards for GML & SVG with some extensions to aid in designing and maintaining the PSTN cable networks (and other networks) in city scale.