Burst - some lovely free stock images from Shopfiy.
Hero Patterns is a collection of repeatable SVG background patterns. Lovely.
Want to see how closely you are being tracked when visiting a website? Check this out: https://clickclickclick.click
In Picking a Color For Your Brand, Bill Kenney suggests that capturing the emotion and tone of your brand will help you choose the perfect colour for your new brand. Not easy but I like that idea.
Color Lisa: colour palette inspiration from the realms of fine art.
UpLabs looks like a handy resource for web design inspiration.
Craft looks like it could be a useful plug-in for Photoshop. It lets you grab real data from external sources (i.e. websites or your own data sets) to use within your mockups.