Bulk Whois API
WhoisThisDomain
WebCargo
Whoisology
Active Whois Browser
JSON WHOIS API
ICANN WHOIS
JsonWhois
Vim Python IDE
Bulk Whois API
Vim Python IDENo features have been listed yet.
WhoisThisDomain - Domain name lookup tool that allows you to get information about domain registration from WHOIS server.
WebCargo - Optimize your workflow by offloading it to us. Useful API's with seamless integration that scale to your needs.
Whoisology - Connected database of whois records and whois history
Active Whois Browser - Browse all information for an IP address or domain name with a single click!
JSON WHOIS API - Parsed domain WHOIS data from any WHOIS server via RESTful API with metered pay as you pricing.
ICANN WHOIS - The official ICANN WHOIS search for domain lookups.