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Free resources don't get removed for inactivity.
Ram isn't really the problem, it's more so the processor. Do you have a decent enough internet connection to run that many players as well?
2.4 Ghz Processor and 8GB of DDR3 ram.... I can't imagine that holding 100 players.
Are you using Windows? If so, that may be why. Windows messures file sizes in units different than the standard, in your case, kibibytes.
Friday night after I posted, currently none exist, you'd have to make your own. And unless you want to pay the $100 to post it to the app store,...