Another Blabr dev here. This is a really nice blab. We'd targeted Blabr for scientific computing (and, in particular, for STEM and conceptual modelling), but you've demonstrated that it also works well for other kinds of online, interactive computation.

Based on your work, it occurs to us that we need to improve some things for non-scientific applications, e.g., number formatting (dollars/cents, thousands separators). Please let us know if there are any other features that would help you do this kind of financial modelling work. Or any feedback in general. Thanks!