Are you one of those people who still uses photoshop for web or application design? Would you like to know a tool that is much more efficient and that has many resources for your projects, as well as a sketch freebie , templates, typographys, UI / UX designs and so on? Sketch Elements is a website that has for you the resources that you already mentioned and also have free UI kits, models, style guides and much more that you can download for free when you access its page. In short, Sketch is the right tool for your designs to be proportional and consistent.