I am a web developer with 6.5 yrs experience having 5+ years experience in ruby on rails..
Implemented gems & plugins in rails applications ..
Amazon Web Servise ( S3 & Cloudfront) - for storage
Sunspot Solr - For large data indexing & search
DRM - For digital rights on video files to avoid download from streaming site.
PJAX - For one page application.
Madmimi & Mandrill - For email marketing
For phonegap I have used titanium appcelerator.