Sources:

Electrum for Bitcoin      - https://github.com/spesmilo/electrum
Electrum for Bitcoin Cash - https://github.com/fyookball/electrum
Electrum for DASH         - https://github.com/akhavr/electrum-dash
Electrum for Litecoin     - https://github.com/pooler/electrum-ltc
Electrum for Vertcoin     - https://github.com/vertcoin/electrum-vtc
Electrum for ZClassic     - https://github.com/BTCP-community/electrum-zcl