Crypto Currency
https://www.freqtrade.io/ – Freqtrade is a crypto-currency algorithmic trading software developed in python (3.7+) and supported on Windows, macOS and Linux.
https://fiatleak.com – watch digital coin transactions in real time.
https://gekko.wizb.it – Gekko is an open source platform for automating trading strategies over bitcoin markets.
https://btcpayserver.org – BTC payment processor, self hosted, no fee, easy install with docker.
https://github.com/openware/peatio/ – Open source crypto currency exchange software.