Why do software calculators try so hard to emulate their real world counterparts? Kalq is a tiny minimalist app which shows the answer as you type, there’s no buttons, no equals sign, you don’t even use a mouse.
It was first incepted when I was in grade 9 and tired of using the default calculator but made a quick VBS script to convert an equation from the clipboard to an answer. Suprisingly many people actually found it useful themselves, hence my uploading of it for free. It too is evolving, but with less priority than the top projects.
If you’re interested in the story behind its development, check out the blog posts.