A legendary 1990s C++ compiler just got its source code resurrected

The original source code for Borland C++ 2.0, a legendary compiler and IDE that powered a generation of DOS and Windows developers in the early 1990s, has been meticulously reconstructed by a developer known as Abedegno. Using custom reverse-engineering tools, they've created a byte-perfect recreation that produces identical binaries to the original commercial compiler, which was never released as open source by Borland.

This resurrection provides a crucial time capsule for historical software preservation and for developers maintaining legacy DOS-era applications. With C only recently standardized as C89 and C++'s 1998 standard still years off when BC++ 2.0 launched, this source offers insight into how commercial compilers handled pre-standardized C++ features. For historians and maintainers of vintage software, having this source available is like finding the original blueprints to a foundational piece of computing history.