As a copywriter, I complete messaging audits for my SaaS clients (using tools like Filestage, or Userback, or Markup), so I can show them where and why their website messaging is weak. I need to annotate screenshots (including full page shots) and explainer videos – Picter allows me to do that nicely.

It's not the complete product yet (there is a publicly available roadmap, with loads of useful features coming), but the best thing is its design is clean and thoughtful. It's also a clean UX experience for reviewers and collaborators.

I feel like I can invite my clients to review comments with confidence because the visual/UX experience is good. And the team behind it seem to be on it.