Snipping Tool (part of Windows 10) | Find program in windows menu |
Snip & Sketch | Windows key + Shift + S |
Part of a screen | Shift + Command + 4 |
Entire screen | Shift + Command + 3 |
Techsmith Capture (formerly Jing, download for PC & Mac)
Monosnap (PC & Mac)
Firefox screenshots (included in browser)
Lightshot (download for PC & Mac, not updated recently)