cidrgolang to calculate CIDR network
cidrget more IP details from CIDR range
tutti-quanti-shelfCollection of miscellaneous developer-oriented utilities wrapped into one single app, built with Electron.
AggregatorA stand-alone class implementation of the IPv4+IPv6 IP+CIDR aggregator from CIDRAM.
ipImmutable value object for IPv4 and IPv6 addresses, including helper methods and Doctrine support.
server-ip-addressesDaily updated list of IP addresses / CIDR blocks used by data centers, cloud service providers, servers, etc.
PSnmapSvendsen Tech's PowerShell nmap-like port scanner accepting IPv4 CIDR notation
python-iptoolsA few useful functions and objects for manipulating ip addresses in python.
cidr-mergerA simple command line tool to merge ip/ip cidr/ip range, supports IPv4/IPv6
ronin-supportA support library for Ronin. Like activesupport, but for hacking!
is-cidrCheck if a string is an IP address in CIDR notation