If you would like free electronic versions of the NASB and NKJV (along with the ESV, KJV and NET which can also be used on e-Sword for free) and a few others, the Berean BerBible software has it available. It’s bare bones and only provides display and searching for now but maybe it will be useful for someone. It’s also good for older computers and systems like PDAs, Palm PCs etc.
www.berbible.org