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   * [pixlr.com](https://pixlr.com/) — Free online browser editor on the level of commercial ones.
   * [Proto.io](https://www.proto.io) - Create fully interactive UI prototypes without coding. Free tier available when free trial ends. Free tier includes: 1 user, 1 project, 5 prototypes, 100MB online storage and preview in proto.io app.
   * [resizeappicon.com](https://resizeappicon.com/) — A simple service to resize and manage your app icons.
+  * [smartmockups.com](https://smartmockups.com/) — Create product mockups, 200 free mockups.
   * [unDraw](https://undraw.co/) - A constantly updated collection of beautiful svg images that you can use completely free and without attribution.
   * [unsplash.com](https://unsplash.com/) - Free stock photos for commercial and noncommercial purposes (do-whatever-you-want license).
   * [vectr.com](https://vectr.com/) — Free Design App for Web + Desktop.