...ATC supports equation solving, polynomial tools, complex numbers, matrix calculations, statistics, physics, geometry, unit conversions, DSP/FFT operations, and scripting. It can also process batch TXT files, making it useful for repeatable calculations and automated workflows.
The project also includes ATC Online Alpha, a WebAssembly-based version that brings parts of the ATC engine to the web.
ATC is released under the GPLv3 license and is made in Portugal.