Welcome. I am Johann N. Löfflmann from Munich, Germany. When I was a child I got my first computer, a C64, used. My first PC was a brandnew i386DX with 2 MiB of RAM and an 80 MiB HDD running MS-DOS 3.3. I have a university degree in computer science. I worked for both Sun Microsystems and Oracle as a tech engineer, and Java was my daily business for many years. Today I am working as a presales consultant for tailored IoT projects, as a Chief Information Security Officer (CISO), and a team lead. Once a developer, always a developer. For 20+ years, I have enjoyed writing FLOSS code. Robust, modern, shiny code. Well, at least sometimes 😉
I am pleased to share the source code for my FLOSS projects with you here on GitHub.
If you like one of the projects below, give it a GitHub star. I am also happy to read your bug reports and feature requests.
The NumericalChameleon (abbrev. n16n) is a platform independent unit converter with a lot of features.
The homepage for end users is at http://www.NumericalChameleon.net
| Name/Repository | Description | OS | Webpage |
|---|---|---|---|
| n16n-desktop | A Swing GUI in order to access n16n's features. | cross platform | http://numericalchameleon.net |
| xml-holidays | n16n's category "High Days and Holidays" | cross platform | https://jonelo.github.io/xml-holidays/ |
| jAdapterForNativeTTS | n16n's feature to speak numbers by audio | cross platform | https://jonelo.github.io/jAdapterForNativeTTS |
| unlock-win-tts-voices | Windows script in order to unlock Windows TTS voices | Windows | https://jonelo.github.io/unlock-win-tts-voices |
| n16n-gensound-mstxt2speech | Windows script to generate sound files | Windows | https://jonelo.github.io/n16n-gensound-mstxt2speech/ |
Jacksum (JAva ChecKSUM) is a free, open source, cross-platform, feature-rich, multi-threaded data integrity verification tool on the command line. It is also a lib, and it is all about checksums, CRCs, and message digests (aka hashes, data/file fingerprints, thumbprints).
The homepage for end users is at https://jacksum.net
| Name/Repository | Description | OS | Webpage |
|---|---|---|---|
| jacksum | Jacksum (lib and CLI) | cross platform | https://jacksum.net |
| jacksum-for-linux | Jacksum File Browser Integration on GNU/Linux | Linux | https://jonelo.github.io/jacksum-for-linux/ |
| jacksum-for-macos | Jacksum for macOS | macOS | https://jonelo.github.io/jacksum-for-macos/ |
| jacksum-for-windows | Jacksum for Windows | Windows | https://jonelo.github.io/jacksum-for-macos/ |
| HashGarten | A GUI to access features of Jacksum | cross platform | |
| docker-jacksum | Jacksum on Docker | cross platform x64 | https://hub.docker.com/r/jonelo/jacksum |
| jacksum-help2wiki | Converts jacksum -h output to GitHub Wiki compatible markup |
cross platform | |
| jacksum-testcases | Testcases to test Jacksum by calling its CLI | cross platform | https://github.com/jonelo/jacksum-testcases |
| dumahadaba | Dump Malware Hash DataBase. For Jacksum's --wanted-list option |
cross platform | https://github.com/jonelo/dumahadaba |
| Name/Repository | Description | OS | Webpage |
|---|---|---|---|
| bashberries | Misc bash scripts | GNU/Linux | https://jonelo.github.io/bashberries/ |
| osxapp_vers | Get OS version info from an Apple Install*.app | macOS | https://jonelo.github.io/osxapp_vers/ |
| ahtfix | Restore the Apple Hardware Test (AHT) on your (old) Mac | macOS | https://jonelo.github.io/ahtfix/ |
| saveWindowsLoginImage | Saves the current Windows logon image | Windows+WSL | https://jonelo.github.io/saveWindowsLogonImage/ |
| TOTP secrets adapter | Adapter to feed authenticators running on the desktop | cross platform |
https://keys.openpgp.org/vks/v1/by-fingerprint/1DC82A86AE55FD2B97E92C0763F84C61889BAC2E
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