How does this compare to CyanogenMod? Security is definitely important but how much should I trust this OS? Both CyanogenMod and CopperheadOS should be able to run smoothly withoug google-specific apps I believe, which is nice for some.
The problem is the vast majority of applications actually require Google services to run on Android devices. Running an Android device without GApps is pretty much pointless unless you are really using it for a very very specific purpose.
This is an exaggeration; you can find plenty of solutions that don't require Gapps, AFAIK. However, I don't know that the typical end-user would be happy solving that problem or using imperfect workarounds. For one thing, you need some sort of GApps solution to access the Play store, AFAIK.
> the vast majority of applications actually require Google services to run
There are plenty of GApps subsitutes for people who want them; I've done some homework on it, but haven't gotten around to trying them and all of the following is "AFAIK"; it's just based on a bunch of reading.
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These appear to be the two leading substitutes:
* TKApps: 6 editions containing varying subsets of Google Apps
http://forum.xda-developers.com/android/software/tk-gapps-t3...
http://forum.xda-developers.com/android/help/qa-tk-gapps-hel...
* MicroG Project: My impression is that this is most carefully engineered option. In addition to its full suite I think it gives you the option of installing only one component, the stripped down GMSCore, which provides substitutes for several Google Play Services APIs.
http://forum.xda-developers.com/showthread.php?t=1715375
http://forum.xda-developers.com/android/apps-games/app-micro...
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Also of interest:
* Blankstore: For minimal Play Store access, or maybe just the API to keep other apps happy.
https://github.com/mar-v-in/BlankStore
http://forum.xda-developers.com/showpost.php?p=29115263&...
* Fakestore: (I don't have a link, but it's the same concept as Blankstore)
* BeansTown106's Gapps: (I don't have a link, but your search engine should find it), "very complete and work quite well" per a dev of OmniROM, a leading Android fork
* GApps Browser: Google Apps sandboxed, so can login there without being logged on in web browser, for confidentiality
https://f-droid.org/repository/browse/?fdfilter=browser&fdca...