I am writing my Bachelor thesis on topic "Current state of stream ciphers". So my questions is: Which stream ciphers are used the most. So far I have A5 family, RC4, E0 (Bluetooth), Snow 3G and ZUC (5G), Salsa20 family (Chacha20) and block ciphers in some operation modes (OFB, CTR). I am missing whole lightweight cryptography - Ciphers like Grain, Mickey, Trivium (eSTREAM project), but are those really currently used anywhere? What about IP telephony? I read some articles about RC4 used in VoIP but are there any new ciphers? The best thing for my thesis would be to find some new stream ciphers (let's say >2015) which are used in the real environment.