Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
Kap - Kap is an open-source screen recorder built with web technology.
Balsamiq Cloud - Fast, approachable, collaborative wireframing
Flux - Application Architecture for Building User Interfaces
Justinmind - Define awesome experiences through wireframes & prototypes.
KPhotoAlbum - KPhotoAlbum is a tool which you can use to easily sort your images.