Network recon framework. Build your own, self-hosted and fully-controlled alternatives to Shodan / ZoomEye / Censys and GreyNoise, run your Passive DNS service, collect and analyse network intelligence from your sensors, and much more! Uses Nmap, Masscan, Zeek, p0f, etc.
Why do you think that https://github.com/shivammathur/IPpy is a good alternative to IVRE