WhoisThisDomain - Domain name lookup tool that allows you to get information about domain registration from WHOIS server.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
WebCargo - Optimize your workflow by offloading it to us. Useful API's with seamless integration that scale to your needs.
SkyBucket - Save and manage all your bookmarks on one board
Bulk Whois API - Bulk Whois API is a provider of parsed WHOIS data in JSON with simple API, competitive pricing, top notch support, and more.
Marqly - Easy-to-use, Marqly lets you save, customize and manage all your bookmarks and texts online like a breeze.