I am the main developer of RP2, a privacy-focused, free, open-source US crypto tax calculator.
RP2 was designed from the ground up with user privacy as its most important principle: it stores crypto transactions and tax results on the user's computer and never sends them anywhere else.
RP2 manages the complexity related to coin flows and tax calculation and it generates data that accountants can understand (in the format of form 8949), even if they are not cryptocurrency experts.
At the same time it features transparent computation by generating full computation details for every lot fraction, so that it's possible to verify step-by-step how RP2 reaches the final result.
It also has a number of other features. It supports multiple coins/exchanges and computes long/short-term capital gains, cost bases, in/out lot relationships, and account balances. It also features FIFO and LIFO accounting methods and it has a programmable plugin architecture for output generators, accounting methods and countries.
I hope you'll consider it for your fantastic list of privacy-oriented tools and services! Thanks.