Assuming that you have a KYCed account on several platforms and that you can register on those platforms, then the free and open source options are:
- OKX: Free trading Bot -----> https://www.okx.com/join/1915102941
- Blackbird: C++ trading system that does automatic long/short arbitrage between Bitcoin exchanges ----> https://github.com/butor/blackbird
- Peregrine: provides several algorithms to detect arbitrage opportunities across over 120 cryptocurrency ----> https://github.com/wardbradt/peregrine
- Freqtrade: designed to support all major exchanges and be controlled via Telegram or webUI ----> https://github.com/freqtrade/freqtrade
That's a great introductory list, what's your personal experience been with this selection, if you have tested any of them yourself,
it will be interesting to see which ones are still profitable in 2023 where crypto algorithmic trading is at its most competitive...