ScreenTray - A better way to capture, annotate and share screenshots
Haihaisoft PDF Reader - Haihaisoft PDF Reader is the name of a free to use PDF reader and printer that is extremely simple to launch.
Annotate by Convergely - Easily annotate images you get on Slack - just like Skitch
Cool PDF Reader - Just like its name Cool PDF Reader, this small PDF reader is a really a cool PDF reader for viewing, reading and editing PDF files for free.
Weava - Workspace to highlight, organize & collaborate on your research articles.
eXPert PDF Reader - eXPert PDF Reader is a free to use PDF reader and views for the Windows operating systems.