Netduma software is built on top of the OpenWRT project. To acquire the source code obtain the Chaos Calmer (or Trunk) OpenWRT branch and select the MikroTIk target. The entire open source software can be acquired using OpenWRT buildroot following these instructions (https://dev.openwrt.org/wiki/GetSource). The OpenWRT platform and open source kernel or packages include the following software:
Linux
Buildroot
Busybox
Dnsmasq
Lua
OpenWRT
SQLite
Drop Bear
The rest of the Netduma software uses either LGPL dynamic libraries, MIT/Apache licences or is entirely self developed by Netduma Software Limited.