I know a good modder at Nexus Xtudo that said once he dont use mods managers.If you need a mod manager, there is NMM Community Edition. Also there is a small tool that allows you to easily activate mods (in this case the mods are installed manually). Or do you need some other features?
There is a good opensource tool
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that help the synch of Folders/Files, its one of my goto tools with
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and
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.