Mike Rohde’s Sketchnote font can be purchased on Delve for desktop and webfont use. Mike created the font for the Sketchnote handbook and writes about its design on his blog. The family has four fonts: Sketchnote Text in Regular, Bold and Italic, plus Sketchnote Square.
Sketchnote Text is a friendly, casual script with a bouncy baseline and a warm texture. To emulate natural handwriting, OpenType features automatically switch between multiple versions of each letter or number, with over 240 alternates in each text font. OpenType kerning classes are used with unique kerns made to tame pairings of all those wily alternates for consistent spacing.
Sketchnote Square is a bold, somewhat compressed headline type that complements the text fonts. Drawn instead of written, the characters in Square have neat little happenstance voids within the strokes. Square also features a handy selection of fun icons, rules, and arrows—some functional tidbits for your design projects.
I've already purchased a license for myself and used it in Mockups and it's outstanding. You can peep it in a wireframe here. The character there is perfect.
You can download the whole family for $99, or by individual fonts for $29. More info at Delve.