DomainWatch allows everyone to monitor a big list of (sub)domains for possible take-overs, all written in Bash.
Currently DomainWatch monitors for 12 services.
Scan your domainlist:
./domainwatch.sh scan <domain_list>
Add a domain to your domain list:
./domainwatch.sh add http://localhost/ <domain_list>
Twitter: https://twitter.com/DamianEbelties
HackerOne: https://hackerone.com/ebelties