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
AutoDWG DWGSee
View CAD files in DWG, DXF and DWF formats
Free DWG Viewer
A free program to show AutoCAD files