https://mobbin.com/ - App captures for competitor copyresearchhttps://www.uisources.com/https://screenlane.com/ - as mentioned below, probably one of the better free ones https://pagecollective.com/ - for landing pages https://patttterns.net/ - lots of real-world product inspiration across web/desktop/mobile. https://refero.design/ - web apps https://scrnshts.club/ - app store screenshots, not r..