NetVideo allows you to download videos from YouTube, Facebook, Vimeo, Instagram, and many more!
Not Applicable 
$ 8.95
Download YouTube Twitter videos with GrabVidApp. Supports all formats: MP4, 3GP, WebM, HD videos, convert YouTube to MP3, M4A audios.
Not Applicable $ 8.95
ForaStat is a free tool which helps analyse websites and estimate valuation including such as Search Engine Reports, Traffic Reports, Social Engagement, Safety, Host Information, Domain WHOIS, Page Speed and much more.