Hi IH, I've been lurking for a month or two, and finally registered for an account last week! I'm excited to be a part of this great community.
I run a small animated video studio and was tired of my project collaboration living across several Google Docs, PDFs and 50+ scattered emails... so I built Clientroute.
It's a client management app aimed at creative freelancers and agencies and allows their clients to follow easy step-by-step directives as a project progresses.
The back-end is completely powered by your Trello account (via their awesome API). You and your team use Trello (mostly) as-normal, and the app grabs everything it needs from marked board/lists/cards. As a client marks to-do items, leaves comments and uploads files, they'll all appear right in your Trello boards.
Are there any freelancer/contractors/consultants out there that could provide any input? Would your clients find this useful?