RP2 is a privacy-focused, open-source, free US Crypto tax calculator, up to date for 2021: it handles multiple coins/exchanges and computes long/short-term capital gains, cost bases, in/out lot relationships, and account balances. It supports FIFO and LIFO and it generates output in form 8949 format (so that tax accountant can understand them, even without being cyrptocurrency experts). It has a programmable plugin architecture for report generators, accounting methods and countries.https://github.com/eprbell/rp2