LuiPack
Collection of Freepascal / Lazarus components and applications by Luiz Américo
UniqueInstance
Ensure only one instance of the application runs at same time
Usage: http://wiki.freepascal.org/UniqueInstance
Download: https://github.com/blikblum/luipack/releases/tag/uniqueinstance-1.1
The code and components not mentioned in this document are not released to the public and can be removed, modified without previous notice