The Digital Press

Wacl is a Tcl distribution designed to run in web browsers using WebAssembly or JavaScript, allowing developers to embed a Tcl interpreter on the client side. It enables Tcl and web developers to integrate Tcl with JavaScript for building client-side web applications.

Why it matters: Wacl brings Tcl's mature scripting capabilities to modern browsers, enabling reuse of decades-old Tcl packages in web apps.

The big picture: It extends the Emtcl project by fully integrating Tcl with browser features like event loops, websockets, and JavaScript calls.

The stakes: Supporting WebAssembly offers faster, smaller builds but may limit compatibility with older browsers lacking WebAssembly support.

Commenters say: Users appreciate the ability to embed Tcl without complex dependencies and wish for updated maintenance beyond the project's last 8-year update.