http://alvinlai.com
All with intuitive hotkeys.
http://alvinlai.com/nanotate/
While apps like Skitch exist, they've become bloated over time and none of them have the hotkeys that let me be as effective as I can be. Yea, I save time by minimizing the use of the mouse/trackpad, so if you're a hotkey fanatic like me, chances are you'd love Nanotate.
I've made several highly web-service specific Mac screen capture tools (Freshlog for Basecamp, Screendocs etc) over the years but they all lacked the ability to annotate.
Two weekends ago I was inspired to finally learn Quartz 2D, then spent the course of the next week drawing custom controls, authentication with imgur, implementing license key generation and Mac App Store integration.
Over time, I intend use what I've learnt with Nanotate to add annotation capabilities to my other web service-specific screen capture apps.
Today, Nanotate launches on the Mac App Store, 50% off the first week:
https://itunes.apple.com/us/app/nanotate/id601942194?mt=12
Here are some promo codes:
XYFYTTNE737M NM7YR7NEJPH9 T44LETPJ4PN3
If you missed the promo codes, you can download a free trial from:
http://alvinlai.com/nanotate/
Let me know what you think!