Electrum BTC Wallet
Has a longstanding reputation with the community, now available on most platforms.
Desktop, Offline, Paper, Cold storage
Android, All Desktop, All Web
Paper wallet, Software wallet
Electrum BTC Wallet alternatives
The original Peercoin (PPC) wallet which features paper wallet generation and mobile app.
The original, open-source LTC node software (fork of bitcoin), contain entire LTC blockchain.
A Bitcoin, ZClassic, Bitcoin Cash, and ZCash web wallet combined with a mobile app for added security
Electrum LTC Wallet
Produced by the developers of Electrum BTC, offers a high degree of anonymity and platforms.