Thomas Okken

ID:1906
First Name:Thomas
Last Name:Okken
Web Address:http://thomasokken.com/free42/
Last Change:2026-10-18
Number of Files:27 (42nd most prolific)
Number of Downloads:87,130 (110th most downloaded)

Free42 for Android 3.4   (details) Other ENG   7,581 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the ARM Android 4.0 and higher binary. Also available from Google Play.
By Thomas Okken. 2026-10-18

Free42 for Linux (x86) 3.4   (details) Other ENG   5,745 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the x86_64 Linux binaries.
By Thomas Okken. 2026-10-18

Free42 for Macintosh 3.4   (details) Other ENG   14,582 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains a binary compiled to run on Mac OS X 10.9 or higher.
By Thomas Okken. 2026-10-18

Free42 for Macintosh Dashboard 2.4.2   (details) Other ENG   5,739 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains a binary compiled to run in the Dashboard of Mac OS X 10.4 (Intel) or higher.
By Thomas Okken. 2019-07-20

Free42 for PalmOS 1.4.71   (details) Other ENG   940 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the PalmOS binary and Windows-based file transfer conduit. Requires the MathLib floating point library.
By Thomas Okken. 2017-02-16

Free42 for Pocket PC 1.4.71   (details) Other ENG   416 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the ARM Pocket PC 2002 binary.
By Thomas Okken. 2017-02-16

Free42 for Windows (32-bit) 3.4   (details) Other ENG   4,733 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the 32-bit binaries for Windows Vista and newer.
By Thomas Okken. 2026-10-18

Free42 for Windows (64-bit) 3.4   (details) Other ENG   4,485 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the 64-bit binaries for Windows Vista and newer.
By Thomas Okken. 2026-10-18

Free42 Mobile Skins 2026-10-18   (details) Other ENG   38,797 KB
Sixty-six new skins for the Android and iOS versions of the Free42 open-source simulator of the HP 42S scientific programmable RPN calculator.
By Thomas Okken and others. 2026-10-18

Free42 PalmOS Skins 1.4.71   (details) Other ENG   256 KB
Skins for the PalmOS version of the Free42 open-source simulator of the HP 42S scientific programmable RPN calculator.
By Thomas Okken. 2017-02-16

Free42 Pocket PC Skins 1.4.71   (details) Other ENG   969 KB
Skins for the Pocket PC version of the Free42 open-source simulator of the HP 42S scientific programmable RPN calculator.
By Thomas Okken. 2017-02-16

Free42 Raw Conversion for Linux   (details) Other ENG   4,238 KB
Command-line tools for Linux that convert Free42 "raw" program files to text listings (raw2txt) and back (txt2raw).
By Thomas Okken. 2026-10-18

Free42 Raw Conversion for Macintosh   (details) Other ENG   8,542 KB
Command-line tools for Macintosh that convert Free42 "raw" program files to text listings (raw2txt) and back (txt2raw).
By Thomas Okken. 2026-10-18

Free42 Raw Conversion for Windows   (details) Other ENG   2,724 KB
Command-line tools for Windows that convert Free42 "raw" program files to text listings (raw2txt) and back (txt2raw).
By Thomas Okken. 2026-10-18

Free42 Skins 2026-10-18   (details) Other ENG   16,240 KB
Skins for the Windows, Mac, and Linux versions of the Free42 open-source simulator of the HP 42S scientific programmable RPN calculator.
By Thomas Okken and others. 2026-10-18

Free42 Source Code 3.4   (details) Other ENG   13,751 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the GPL source code, buildable for Windows, Mac, Linux, Android, and iOS.
By Thomas Okken. 2026-10-18

Free42 Source Code (Legacy) 1.4.71   (details) Other ENG   1,827 KB
Open-source simulator of the HP 42S scientific programmable RPN calculator. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the GPL source code of the legacy versions, buildable for PocketPC and PalmOS, among others.
By Thomas Okken. 2017-02-16

Plus42 for Linux 1.4a   (details) Other ENG   6,339 KB
Open-source simulator of an upgraded, advanced version of the HP 42S scientific programmable RPN calculator, with more functionality and a bigger screen. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the x86_64 Linux binaries.
By Thomas Okken. 2026-10-18

Plus42 for Mac 1.4   (details) Other ENG   15,618 KB
Open-source simulator of an upgraded, advanced version of the HP 42S scientific programmable RPN calculator, with more functionality and a bigger screen. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains a binary compiled to run on Mac OS X 10.9 or higher.
By Thomas Okken. 2026-10-18

Plus42 for Windows (32-bit) 1.4a   (details) Other ENG   5,278 KB
Open-source simulator of an upgraded, advanced version of the HP 42S scientific programmable RPN calculator, with more functionality and a bigger screen. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the 32-bit binaries for Windows Vista and newer.
By Thomas Okken. 2026-10-18

Plus42 for Windows (64-bit) 1.4a   (details) Other ENG   5,102 KB
Open-source simulator of an upgraded, advanced version of the HP 42S scientific programmable RPN calculator, with more functionality and a bigger screen. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the 64-bit binaries for Windows Vista and newer.
By Thomas Okken. 2026-10-18

Plus42 Mobile Skins 2026-10-18   (details) Other ENG   20,353 KB
Skins for the Android and iOS versions of the Plus42 open-source simulator of the HP 42S scientific programmable RPN calculator.
By Thomas Okken and others. 2026-10-18

Plus42 Raw Conversion for Linux   (details) Other ENG   4,660 KB
Command-line tools for Linux that convert Plus42 "raw" program files to text listings (raw2txt) and back (txt2raw).
By Thomas Okken. 2026-10-18

Plus42 Raw Conversion for Macintosh   (details) Other ENG   9,373 KB
Command-line tools for Macintosh that convert Plus42 "raw" program files to text listings (raw2txt) and back (txt2raw).
By Thomas Okken. 2026-10-18

Plus42 Raw Conversion for Windows   (details) Other ENG   3,017 KB
Command-line tools for Windows that convert Plus42 "raw" program files to text listings (raw2txt) and back (txt2raw).
By Thomas Okken. 2026-10-18

Plus42 Skins 2026-10-18   (details) Other ENG   12,019 KB
Skins for the Windows, Mac, and Linux versions of the Plus42 open-source simulator of the HP 42S scientific programmable RPN calculator.
By Thomas Okken and others. 2026-10-18

Plus42 Source Code 1.4a   (details) Other ENG   9,326 KB
Open-source simulator of an upgraded, advanced version of the HP 42S scientific programmable RPN calculator, with more functionality and a bigger screen. Because this is a written-from-scratch simulator, it does not need a ROM from an actual calculator. Under constant development, so check the author's web site for updates. This archive contains the GPL source code, buildable for Windows and Mac.
By Thomas Okken. 2026-10-18

Part of the HP Calculator Archive,
Copyright 1997-2026 Eric Rechlin.