A JS + Electron dice roller that accepts dice notations.
You can use things like 2d20 + 5 and d20 + 2 and any mathematical operators, this app using mathjs at core.
You can also use things like 2d20dh1 => min(d20 , d20) or 2d20dl1 => max(d20 , d20).
You can redo the last 30 throws.
You can download the latest version of the app by going here.