In short, this is a of PPSSPP, which includes the latest experimental features and bug fixes that haven't been released in the official Google Play Store version yet.
The text is the filename for a specific development build of the PPSSPP emulator for Android . EmuCR-ppsspp-v1.14.4-575-g86a19cebf-android.apk
: Indicates this is the 575th "commit" (update) made to the code since the v1.14.4 release. In short, this is a of PPSSPP, which