Treesheets: cross-platform, free-form data organizer app

I like the part where you can do calculations like in classic spread sheet apps, but visualize what your are doing, instead of hiding it behind formula fields. (see this screenshot: http://strlen.com/treesheets/docs/images/screenshots/screens...) But functionality and especially usability of this application is quite limited. It feels more like a proof of concept, than an application for daily use.

I really like these sorts of tools, but the file format[1] is a bit of a con for me. Being binary/proprietary, it makes it difficult to integrate other tools or feed the data into other systems. [1] https://github.com/aardappel/treesheets/tree/master/TS/examp...

I use this occasionally, discovered it in the Linux software repository. I think it’s worth checking out the UI paradigm, it’s very keyboard friendly. My main gripe is that it has no app icon in my toolbar on Mint, and that causes it to render as an invisible sliver, not even a full size button.