Let us introduce Artboard Studio, what is it? Let's say it will be the first and last mockup creator tool you will ever need.
Tools, I think we are having the luxury of a huge range of variety of tools to increase your productivity in your workflow as a designer and even as a developer. With having a huge quantity of tools, it’s hard to handpicked which one could work best for you but to actually try them. Here’s a starter if you’re into having a handy and useful design tool and palette of gradients, meet WebGradients.com.
WebGradients.com is a simple and useful tool for designers and developers. Most particularly about gradients, you can grab a CSS code for each colour, a PNG image and by also download a Sketch/PSD file. Make sure to check it out!