Domainer - Manage All Your Domains and Websites
DNSChecker.org - Check DNS Propagation worldwide. DNS Checker provides name server propagation check instantly. Changed nameservers so do a DNS lookup and check if DNS and nameservers have propagated.
cliget - Download files using curl or wget.
Whats My DNS - Instantly check your domain names current IP address and DNS record information against multiple name servers located in different parts of the world.
Folx - Folx is a simple yet powerful download manager and torrent client for Mac OS X.
NsLookup.io - A simple and powerful tool for querying DNS records