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by pjmlp 93 days ago
Besides all answers, this concept exists in modern IDEs like Eclipse, anything JetBrains, Netbeans, Visual Studio,...

Even though their appear to be file based, the plugins API makes use of a virtual filesystem that allows for managing the code as if it was the image based concepts from Smalltalk, Lisp and other systems like Cedar, Mesa, Oberon,....

Also something that many don't think about, databases with stored procedures.