This is a very simple web interface for management of static DHCP leases in DNSmasq and Mikrotik. It generates config files for DNSmasq and uses RouterOS API to manage Mikrotik. Network devices (usually PCs) are separated into subnets by department and use triplets (hostname, MAC address, IP address) for identification. Information is stored in MySQL and only exported by your explicit desire. Subnets are rarely changed, so there is no web interface for them - you have to edit the SQL table...