Available Domains is Professional Domain Name Search Whois Tool, it can query up to 600 domains per minute, show Expired Domains and has many Advanced Features

Automatic domain names generation. Just enter keywords to be included in your domain name. The program will create all matching names. ALL possible combinations of names will be created.
Professional Edition has a Quick Mode which requires only one or two keywords from you. Select desired Theme. and the program will generate a plenty of great domain names. Currently there are Common, Business, Sport, Entertainment, Software Themes, and you can add your own!
Professional Edition can check Link Popularity from Google, Altavista, AllTheWeb, presence in Yahoo and DMOZ Directories and Traffic Ratings from Alexa.
USA, UK and Canada Trademark search.
Optional and Mandatory keywords.
Order of words can be defined, such as Start, End, Middle, Number of Order, and their combinations.
Professional Edition and Standard Edition supports ALL TLDs (524 Top-Level Domains).
Open and Save all your data, that is, keywords, selected TLDs and results of querying.
Professional Edition allows you to PRINT OUT the search results and edit TLD's whois server.
Import your keywords list and domains list already created in any third-party programs.
Export your domain list to text or CSV file .
Domain List mode allows you to enter domains to lookup without making combinations of them. It can be used to import list of domains but override their TLD.
Extended mode splits the query in two passes. First pass checks for domain's availability and retrieves basic information. Then second pass is used for retrieving details for domain that is taken. This makes the program both fast and detailed.
It works very fast. Tests show speed of more than hundred domains per second. And we decided to add delay between sequentual requests and set the speed of querying to about TEN domains per second. This was done to let WHOIS servers working in usual manner without being overworked. This speed is more than enough for every need.
Instant Configuration Update. Configuration, that is TLDs, currently working WHOIS servers and other information that needs to be updated can be downloaded automatically from our web site on each start of the program.
Can be used in two modes - HTTP or WHOIS. Mode determines which protocol to use for lookup domain information. Default is WHOIS mode. HTTP mode is provided for compatibility with previous versions and supports HTTP proxy.
You can send Domain List via E-Mail.
When you minimize the program, it hides and removes itself from the taskbar. You can use tray icon to restore it.

Feature List