Multi Whois is a small whois domain name search program capable of finding bulk domains via a wordlist file or specific domains provided by the user. It's a good way to search for domains that are available to buy.
The wordlist format consists of a domain name per line with or without the .dot tld.. Examples below
google
yahoo
foobar
Note:Must select a tld from the dropdown box
or
google.com
yahoo.net
foobar.guru
Bind2nsd provides scripts that translate DNS information in BIND format to NSD format, and then copy that translation to an NSD server. The goal is to make it simple to run redundant BIND and NSD servers and keep them in sync, using only BIND files.