pure OpenLayer is good or GeoExt WHich have more options w.r.t GIS client-side
closed as not a real question by R.K., iant♦, CaptDragon, Aaron, Get Spatial Nov 28 '12 at 0:36
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This is somewhat of a trick question. In terms of GIS functionality, both GeoExt and OpenLayers are very good, approximately equally well-suited to whatever your application is. This is because GeoExt is based on OpenLayers.