Customize one of existing open source Social Bookmarking Gadgets ([login to view URL], [login to view URL], [login to view URL] ..) with the following: 1) Minor forms and design changes of open source solution 2) adding SMS gateway (with http interface to a provider like[login to view URL] or [login to view URL]) 3) Captcha for e-mail and SMSs 4) Install and test on Amazon AWS environment (mail sending using Amazon SES) Please suggest open-source project that will be customized: proposed above or some others.