Hi, I am currently developing a calculator for physicists which can be very simply opened in a web browser, without the need to install anything, or even be online. The repository is currently on Github here and can be freely accessed (click the download zip button at the bottom right corner). Anyone interested in joining the development is welcome. Also, if you find bugs or have good ideas for improvements, that's also welcome. The calculator can obviously do calculations with numbers, but also includes units manipulation, and physical constants. I recently added the capability to plot curves, so that's convenient for quick visualization of functions. I know that google can already do all this calculation and graphing, but I was kind of tired of typing the full name for constants, such as "electron charge". Also you cannot add custom things to google calculator, and you have to be online. So here you go, please tell me what you think.