I recommend RP2: it's privacy-focused, open-source, community-driven, free and non commercial (this means you have unlimited transactions at no cost). It generates comprehensive outputs, which include year-end balances, gain-loss summary, 8949 form and much more. It protects your privacy: your tax data never leaves your machine. It also has transparent computation to let users verify result correctness. It's on Github: https://github.com/eprbell/rp2