ArcIMS的评价：
"Advantages of ArcIMS? * distribute applications over multiple machines * Native integration with the Geography Network.
MapServer can be made to work within the geography network. * Includes software to handle routine tasks like making the map
services (map files), designing web sites, etc. * Supports more data formats - especially raster * Better support for storing spatial data in RDBMS through SDE * You don't have to try to sell a relatively unknown product
(MapServer) and philosophy (Open Source)
"Disadvantages of ArcIMS? * speed (even running mapserv as regular cgi it is much faster) * resource hog * limited OS (no Linux) * less stable. My ArcIMS? experience is on NT so that may be more
a reflection of the OS than ArcIMS?. * poorer support * source code unavailable * cost"
速度方面：Most everybody said that Mapserver is faster* although theoretically this should not be the case since Mapserver is a CGI while ArcIMS? is a Java app. (*nobody claimed ArcIMS? is faster, just not everybody made a speed comparison)
文档和安装，认为MapServer其实好一些。
原文：http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?MapserverVsArcIMS