Icons8 for Mac
Contains 5000+ free icons in PNG format to insert directly into your work
Icons8 app allows to search icons and insert directly into Photoshop, Xcode or anything. Contains: - 5000 free icons for developers and designers - PNG format in multiple sizes from 25x25px to 512x512 px - iOS 7, Android and Windows 8 styles The application resides in status bar and allows to: - Search by tags - Drag to Xcode, Photoshop or anything - Vector icons are not included into the application and available for a fee Features: - Superfast -2 seconds to find an icon and insert it into your work - All files are on disk -browse the folders with Finder, all icons are there - Icons are tagged -If you are looking for an envelope icon, any related keyword would work: mail, message, send etc.