This is the very first version with only one actually working class. It's a FirefoxMemoryCacheExtractor (very descriptive name eh ?). There is no error handling, no manual and no GUI. That is stuff for later.
How to use FF-MemCachEx:
Go to your firefox cache (about:cache?device=memory) and save an entry. Then execute the .bat or .sh from the extracted zip (command-line) with the saved html and a name for the output-file.
Linux : ./FF-MemoryCacheExtractor.sh ~/example.html output.txt
Windows: FF-MemoryCacheExtractor.bat ./example.html output.txt