playnite (open-source)
gog galaxy
heroic games launcher (o-s)
pegasus (o-s)
launchbox
gavilya (o-s)
kolektor
metropolis launcher (o-s)
nostlan (o-s)
rare launcher (o-s)
legendary (o-s)
game launcher (o-s)
utilities:
magpie (o-s)
reshade (o-s)
integerscaler
sclender
loseless scaling
gog galaxy
heroic games launcher (o-s)
pegasus (o-s)
launchbox
gavilya (o-s)
kolektor
metropolis launcher (o-s)
nostlan (o-s)
rare launcher (o-s)
legendary (o-s)
game launcher (o-s)
utilities:
magpie (o-s)
reshade (o-s)
integerscaler
sclender
loseless scaling