17 Hats is what I use for bookkeping, client time tracking, to do lists, and project tracking. It's the best all-in-one tool that I've found for managing a small business. Use my referral link above to get 10% off!
Get almost anything for $5! From 3D product mockups to professional recordings to editing to custom image creation. You'll find it here and for an affordable price.
(the above link is a referral link. I get store credit which I use for my clients)
I use Trello to design all my workflow processes so my systems run seamlessly, and so I can communicate how I do what I do to my team members. And the best part: it's completely free.
ScreenCast-O-Matic is what I use to make all my videos for my clients and most of my videos in my blog and on YouTube.