Download of SurvGNSS 2.88.1961 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. SurvGNSS lies within Photo & Graphics Tools, more precisely Viewers & Editors. The most popular version of the tool is 2.8. The default filename for the program's installer is srvbprf.EXE. You can install this PC program on Windows XP/7/8 32-bit. This program is a product of Carlson Software. We recommend checking the downloaded files with any free antivirus.
From the developer:
SurvGNSS Post-Processor – a simple, yet powerful data post-processing solution integrated into Carlson Software workflow. The SurvGNSS post-processing software is a fully automated solution designed to easily process raw GNSS data from different receiver brands.
You may want to check out more software, such as SPX Editor, OpenEV or WallMaster Pro, which might be related to SurvGNSS.