JADX - JADX is a decompilation tool that can produce Java Source code from Dex and Apk files, being capable of providing human-readable java classes, it reverses AndroidManifest.
APK Pure - Download apk for Android with APKPure APK downloader. NoAds, Faster apk downloads and apk file update speed. Best of all, it's free
APK Editor Studio - APK Editor Studio is an open-source Android application editor that allows you to edit APKs with the help of reverse engineering.
ApkPlayGame.com - Android Gaming at its best! Download thousands of Android Games fast, free and easy apk download! All game genres including 3D, HD, Open World, FPS, Battle Royale, Offline, Online Multiplayer, Time Killer...
APK Studio - APK Studio is an open-source Integrated Development Environment that allows you to recompile and decompile Android applications with its unified interface.
APKMirror - Android Market and APK Downloads