Design

Need to make a flowchart or diagram real quick?

Simple, fast and just powerful enough web based diagramming tool with sharing functionality. Open source so you can host it yourself and protect your data, access and backups to your hearts content. The keyboard shortcut tool switching is what really makes the this the best option for visually communicating concepts.

A free and open source vector graphics editor for illustrations, diagrams, icons, logos, and SVG artwork.

It's like FontAwesome only slightly better looking IMO and insanely easier to add to . As of v5 this is no longer a fonticon set but instead a dynamic JIT javascript SVG loader. I keep the reference here because it's still a decent icon set and v4 is still available in github if you're looking for a customized/customizable fonticon collection.

There a few new tools out there to mock up wireframes quickly. I ran through several options and found this one to be by far the simplest and easiest to use. Free for one offs, or pay for more features and an account to store them in.