See which domains were deleted from the zone files on the previous day
See the daily list of domains that were added to the zone files on the previous day
Search for domain names across different TLDs (including the new global TLDs)
The full list of all TLDs and ccTLDs along with whois servers and otehr data.
Research how various TLDs and gTLDs are doing in the Alexa top 1 million list.
Here is a list of new gTLD sites that are within the top 100,000 Alexa sites.