Icons8 and Delphi GUIs

Icons8 is not just another website where you can download a zip file with a collection of icons, but it is much more then this. There is a client desktop app for Windows and Mac that integrates with icons8 service and makes it super easy to select and adjust the icon that you need. Icons8 business model is very pragmatic and you can use PNG icons up to 100 pixels for free in open source projects, but you can also get paid monthly plan and have access to all icon formats and sizes.