Graphing calculators can be quite expensive, despite the old technology that is used on many of them. Enter LibreCalc, a graphing calculator built on low cost, easy to obtain hardware that has extensive documentation and free and open source software. The case models are free to download on the web to 3D print at home, and the calculator has 128 MB of RAM. It runs Linux with a TI simulator environment with the hopes of appealing to users who have grown accustomed to the TI interface.
