Hello all -- Up to this point, I've been using 10.8.5 along with 10.11.6 as my main, day-to-day "OS's of choice". Unlike others, I have no compulsion to "upgrade just because Apple wants me to". I go my own way. Still, I've been experimenting with both Sierra and High Sierra on external "test drives". On both of my current working OS's, I use the "Safari Cookies" extension/app to manage my cookies. SC allows the user to "whitelist" those cookies/databases that he wishes, and all others will be deleted each time Safari quits. It's a nice system, and it works. However, starting with Sierra, neither "Safari Cookies" or "Cookie" (another app) will install. Or, more correctly, they -appear to- install, but then when you re-launch Safari, they're "not there". Does anyone know of any cookie-management externsions/apps/whatever "out there" that continue to work with Sierra and High Sierra? Or... is this one more aspect of user-control that Apple has decided that the end user shall no longer be accorded?