epher

A programmable, scriptable calculator

One calculation engine, four ways to use it. Type expressions, save functions and scripts, graph your results, and keep everything across sessions — in any of six languages.

Read the user guide

Get epher

One download, every way to use epher: the command line, the REPL, the terminal UI, and the desktop app — all in the single `epher` executable.

Windows

One installer. It puts `epher` on your PATH — use it from CMD, PowerShell, the Start menu, or a double-click.

Downloads

Download the Windows installer

macOS

One app. Drag it to Applications; a button inside installs the `epher` terminal command for you.

Downloads

Download for macOS (Apple Silicon)

Linux

One install per package family: Debian/Ubuntu, Fedora/RHEL, or the AppImage for everything else (Arch included). All put `epher` on your PATH.

Downloads

Web app

Runs in your browser, is installable, and works fully offline after the first visit.

Get it

Launch the web app

Works fully offline once loaded — install it from your browser's menu.