There were also some shareware emulators that were mostly 100% safe: like Jar of Beans and AMIDuOS.
Its code is now in Android Studio) and Android-x86 (free source code, low app compatibility and not easy to configure in VirtualBox - shared folders and GooglPlay integration). Excellent performance on par with noxplayer.
With my experience i can tell you that only 100% safe emulators are Android Studio (the Google offical emulator that is a pain in the ass to configure), Leapdroid (out of production. Meanwhile in these years i tried most of the others:Genymotion, Jar of Beans,WMlite, YouWave, Amiduos,Droid4x and Memu (NoxPlayer Clone).
I started to use Android emulators since the beginning:Īndroid-x86 in 2009-2011 (mostly a proof of concept but very low in speed and compatibility)