Parrot - Virtual machine

Parrot is a virtual machine created in 2002.

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22Years Old

Parrot is a register-based process virtual machine designed to run dynamic languages efficiently. It is possible to compile Parrot assembly language and PIR (an intermediate language) to Parrot bytecode and execute it. Parrot is free and open source software.Parrot was started by the Perl community and is developed with help from the open source and free software communities. Read more on Wikipedia...

Tags: virtual machine
Early development of Parrot happened in https://www.perl.org
The Google BigQuery Public Dataset GitHub snapshot shows 88 users using Parrot in 121 repos on GitHub
GitHub supports syntax highlighting for Parrot
See also: (30 related languages) C, Parrot Assembly, PIR, Perl, Raku, Python, JVM, LLVM IR, Java, Java Bytecode, Joy, Lua, PHP, Ruby, Scheme, Tcl, WMLScript, Arc, APL, Common Lisp, Lisp, Forth, QuickBASIC, Smalltalk, CIL, Befunge, Brainfuck, LOLCODE, UNLAMBDA, Unicode

Example from Wikipedia:

.sub 'main' :main
    $I1 = 4
    inc $I1     # $I1 is now 5
    $I1 += 2    # $I1 is now 7
    $N1 = 42.0
    dec $N1     # $N1 is now 41.0
    $N1 -= 2.0  # $N1 now 39.0
    print $I1
    print ', '
    print $N1
    print "\n"
 .end