CodeSignal

Elixir environment.

Rust environment.

Ubuntu base with Nodejs

Clojure

Groovy environment.

Dart environment.

Haskell user code environment.

Erlang environment.

Julia environment, should be pre-version 1.

OCaml user code execution environment.

Nim environment

D user code execution environment.

Pascal code execution environment

Octave user code execution environment.

Lua environment

Perl environment.

Smalltalk code execution environment.

Lisp environment.

TCL code execution environment.

Galen environment. Includes Java and Firefox to test front-end code.

Stable image for Meteor Cloud deployments.

User code execution environment for OpenCV. Built on top of the C++ image.

K3 video image

MySQL code execution environment

MySQL code execution environment, built on an Ubuntu 16.04 base

Python user code execution environment. Large due to machine learning libraries.

Julia environment for language version of at least 1.0