Aldor is a programming language. It is the successor of A# as the extension language of the Axiom computer algebra system.
The Aldor language combines imperative, functional, and object-oriented features. It has an elaborate type system, allowing types to be used as first-class values. Aldor's syntax is heavily influenced by Pascal, but it is optionally indentation-sensitive, like Python. In its current implementation, it is compiled, but an interactive listener is provided.
Aldor is semi-free software, available under the Aldor Public License.
Hello world looks like this:
#include "aldor" stderr << "Hello world" << newline;