I'm a hobbyist in this space, but my sense is that there is definitely a Github-like platform you could eventually build towards (in the distant future of cours

I'm a hobbyist in this space, but my sense is that there is definitely a Github-like platform you could eventually build towards (in the distant future of course). Dataset annotation and workflow is a big area, covering text (which you have the basics of), images, audio, and so many others even within those broader categories (eg: MRI images vs. other types of images, PDF text vs. HTML text, etc). As psimm mentioned on this same thread branch, there are all sorts of workflows and features that the relevant business users need, and the best way is to actually get 5 of them on a separate screenshare call to better understand their specific workflows. You can then abstract those examples given your own knowledge of the space into entry-tier and premium-tier features, and price accordingly. Do beware of feature explosion, because many of those discussions will be a list of desired features which, while nice in the long run, don't help you get you a stable next stage in a sustainable manner. At this stage, find one thing your tool can do exceedingly well for a number of users (ideally who will pay for that). Interestingly, the Github guys also started out as a side-business while working full-time jobs. I think you're off to the great start, nice and intuitive tool for text-annotating, so get that flow right before expanding into others. You definitely have something pretty cool here. Congrats again on the launch!