Pixelmator - Pixelmator is an image-editing application for Mac and iPad.
Responsive Website Test - Test any website on desktop, mobile, and tablet
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
Responsive Viewer - View multiple screen dimensions in one view
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
LT Browser by Lambdatest - LT Browser is a free dev friendly browser for developers and testers. You can see mobile view of website on different screen sizes and resolution on 50+ pre installed view ports. You can build, test and debug your website faster then ever.