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Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer.
It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image.
Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.
All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.
From version Free42 2.5.7:
SOLVE would not always return the best function value in Z, or the second-best guess in Y. Fixed.

Changed haptic feedback preference setting to a four-level slider, to allow stronger feedback.

Reduced the GPS update interval for LOCAT from 60 seconds to 5 seconds.

Sharing an empty print-out would crash. Fixed; now it pops up a message instead.

Fixed crashes when importing state files from email attachments.
All versions
September 18, 2019
September 11, 2019
July 12, 2019
July 4, 2019
July 1, 2019
June 25, 2019
June 25, 2019
May 20, 2019
May 19, 2019
May 11, 2019