Photopea - Online photo editor, which can work with PSD, XCF and Sketch files (Photoshop, Gimp and Sketch App).
SocialSizes - Sketch templates for sharing images & videos on social media
Replace Cover - Create beautiful cover art for your Spotify playlists
Craftwork - A collection of User Interface resources made by Craftwork
Headers.me - Create social cover images that get you followers
Dashboard UI Kit - A modern & responsive dashboard UI kit for designers.