Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Android

whatmask is described as 'Whatmask is a small C program that will help you with network settings and subnet calculations' and is an app. There are seven alternatives to whatmask for a variety of platforms, including Windows, Linux, Web-based, Android and Self-Hosted apps. The best whatmask alternative is IPCalc Android, which is both free and Open Source. Other great apps like whatmask are ipcalc, Advanced IP Address Calculator, LanCalculator and ship.sh.

IP Calculator. ipcalc takes an IP address and netmask and calculates the resulting broadcast, network, Cisco wildcard mask, and host range. By giving a second netmask, you can design subnets and supernets....
Advanced IP Address Calculator (Free) - Easy-to-use IP subnet calculator that lets you to calculate every aspect of your subnet configuration in a few mouse clicks!

LanCalculator 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.

A simple utility for the calculation and analysis of IP subnet values, designed to simplify network configuration tasks.


