G'MIC is an open source image processing application, distributed with the CeCILL (GPL-compliant) license and includes many graphic filters suitable for handling any image. It is basically an add-on that allows you to extend the editing functions on your computer with programs like GIMP and Krita. After installing the application, run the GIMP or Krita program, upload the photo, select filters and click G'MIC. If you want to see the multitude and quality of effects, you can run it online version of the app, upload your photos and add any effects you like. In conclusion, it is an excellent application that is worthy of competing similar professional applications and even absolutely free.