PlexDomain: Domain Analysis Tool. It supports:
POWERFUL DOMAIN SEARCH
Deleted
On-Hold
Real-Time Newly-Deleted
Expiring Soon
Available for Registration
Registered Domains
REAL-TIME NEWLY DELETED LISTS
MONITORING DOMAINS FOR AVAILABILITY – Schedule background jobs and receive emails
DIRECTORY CRAWLING
FILTERING DOMAINS
It supports filtering domains by searching number of links in:
AltaVista AllTheWeb Teoma Alexa AOL HotBot Lycos Google DMOZ
LookSmart MSN Yahoo
POWER SEARCH FOR AVAILABLE DOMAINS – It takes list of keywords from a file or user-input, creates a combination of domains and checks which one are available.
SUB-DOMAINS SEARCH
SIMILAR-SITES SEARCH to keep up with the competition
LINK-TO SEARCH to keep up with affiliates and partners
MULTI-THREADING
SCHEDULING BATCH JOBS
WHOIS RECORDS STATISTICS INDIVIDUAL LINK POPULARITY LINK RANKING
KEYWORD SUGGESTIONS REAL-TIME KEYWORD SEARCHES/TOP KEYWORDS
REGISTRATION, MONITORING AND BACK-TRACKING

Domain, Traffic, Expired, Deleted, Popular, Ranking, Search, Engine, Directory, Yahoo, DMOZ, Lycos, HotBot, MSN, AOL, Alltheweb, LookSmart, Keyword, Suggestion, Hot, Words, Whois, Record, RWhois, Batch Job, Schedule, Threading,