Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Publishizer - Launch a preorders campaign for your book
PageMarker - Save, organize, annotate and revisit your bookmarks
Noteflight - Noteflight is an amazing online notation editor.
Rewind Bookmarks - Your bookmarks, by date, with thumbnails and instant search
Fulfil.IO - Cross Channel (offline, online, social & mobile)ERP for retailers.