Leica Geosystems has released version 4.2 of its Leica Spider software suite for GNSS RTK networks and reference stations. Leica Spider software is an integrated suite of programs for GNSS networks, consisting of Leica GNSS Spider, Leica SpiderWeb and Leica SpiderQC. With its scalability and modularity, it can be tailored to suit various GNSS surveying, machine control, GIS, seismic and structural monitoring applications, Leica Geosystems said.