Placeit - Generate realistic product shots in seconds
Mediamodifier - Create beautiful designs and product mockups in seconds.
iPhone Screenshot Maker - Add iPhone frame on your screenshots or Cut status bar.
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
AppScreens - Screenshot creator for the Apple App and Google Play Store. Generate designer quality, pixel perfect screenshots for your iOS and Android apps at the same time
mockDrop - Is a webapp for creating free device mockups including your screenshots.