C++ - Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation
Lazarus - Lazarus is a cross-platform IDE for the Free Pascal compiler.
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Free Pascal - Free Pascal (aka FPK Pascal) is a 32 and 64 bit professional Pascal compiler.
Rust - A safe, concurrent, practical language
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible