LanCalculator is described as 'Makes possible not only to easily calculate the subnet addresses range and subnet masks but also broadcast address, net address, net prefix and net mask inversion which is used in the access control lists (ACL) of Cisco network equipment' and is an app. There are seven alternatives to LanCalculator for a variety of platforms, including Linux, Web-based, Windows, Mac and Android apps. The best LanCalculator alternative is IPCalc Android, which is both free and Open Source. Other great apps like LanCalculator are ipcalc, Advanced IP Address Calculator, whatmask and ship.sh.