The design and photography standard for image editing
An easy way to update Adobe Photoshop!
PhotoScape: An intuitive image editing tool
Do something useful with the photos you take on your phone
AutoCAD
AutoCAD: The most popular tool you can use
GstarCAD (64-Bit)
More stable and faster, GstarCAD 2016 is an optimized CAD platform to save countless hours of design and rework
AutoCAD Drawing Viewer
A Great free AutoCAD Drawing Viewer
AutoDWG DWGSee
View CAD files in DWG, DXF and DWF formats