Federal Tax Return program for Linux
"TaxGeek is a Mozilla-based US income tax program that includes Form 1040, Schedules A, B, C, C-EZ, D, E, K-1 (1065), SE (Short and Long), W2, Form 8880, Form 8863, Form 3903, and Form 2441 with access to most other files as PDFs. It is also intended to be extensible so that developers can easily add other forms that are needed without affecting the existing file formats and stored data."