Font Combinations by Canva is a great tool to help you find the perfect font family combinations. A quick way to find which fonts fit together.
Fonts in Use
Fonts In Use is a public archive of typography indexed by typeface, format, industry, and period. Perfect for inspiration and font selection.
Alternatype helps you find free fonts with similar features to the most famous typefaces.
Font Squirrel offers hand-selected typefaces, fonts and webfonts that 100% free to use, presented in an easy-to-use format.
CSSans Pro is a colorful, sassy, CSS font created by Izabela Andronache and Codrin Pavel. You can use it for free on your next project.