I've had Toon Boom Harmony on my PC for years, waiting for me to have the free time to learn it. I've finally got round to that over the last week or so and here's the result. In the past most of my character animation has been done with CelAction, but for personal projects, or smaller projects for individual clients, Toon Boom has the advantage that you can draw directly into whereas CelAction, which is geared towards a studio production system where the designer and the animator are two different people, requires its artwork to be created in another program like Illustrator or Photoshop and then imported. Every program has its own quirks and special way of doing things and I'm still getting used to Toon Boom's, but getting there.
Toon Boom: Walking before I can run