In a single collection, Fork Awesome is a pictographic language of web-related actions. Completely free for commercial use. Originally designed for Bootstrap, Fork Awesome works great with all frameworks (even plain HTML). Doesn't require JavaScript. Easily style icon color, size, shadow, and anything that's possible with CSS. Scalable vector graphics means every icon looks awesome at any size. Accessibility minded and aware.

Free and libre fonts for desktop and web use.

Web font downloader/inliner.

Downloads a set of web fonts specified by @font-face rules in a CSS file. By default, woff2 equivalents are inlined as the modern browsers all support it.

By inlining woff files, this reduces the number of server roundtrips by two in the best case (the external CSS and woff files), one in the worst (just the external CSS). By reducing roundtrips we can reduce the amount of time we risk showing a flash of unstyled or hidden text content.

This tool is currently designed to work against Google's font server but should work against any hosted CSS font that uses @font-face.

A website that lets you upload SVG files and it'll convert them into Bootstrap compatible glyphicons for use in your website. Also has a huge archive of icons that you can download and use.