• Joel Franusic / Online-REPs-and-REPLs
  a very big and comprehensive list
  (tags: list repls repl programming online tools web)
• Ideone.com | Online IDE & Debugging Tool
  What is ideone?
  Ideone is something more than a pastebin; it's an online compiler and debugging tool which allows
  to compile and run code online in more than 40 programming languages.
  (tags: programming online code tools ide web pastebin repl)

But wait, there's more

• Just kidding, nothing's related to this.

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