JSI Tip 6927. Description of the NetBIOS Browsing Console (Browcon.exe).

Microsoft Knowledge Base Article 818092 contains the following summary:

This article describes NetBIOS Browsing Console (Browcon.exe), a utility that you can use to troubleshoot NetBIOS network browsing problems. NetBIOS Browsing Console builds on the power of Browstat.exe, a command-line tool that is included in Windows 2000 Support Tools.