Rust - A safe, concurrent, practical language
Vectorizer.io - Fast and easy way to vectorize an image online
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
potrace - Open source program that transforms bitmaps into vector graphics.
NIM - GB64.COM is the home of The Gamebase Collection of C64 games.
Autotracer.org - Free online image vectorizer