The Zeal Operating System is a modernized, professional fork of the 64-bit Temple Operating System. Guiding principles of development include transparency, full user control, and adherence to public-domain/open-source implementations.
ZealOS strives to be simple, documented, and require as little of a knowledge gap as possible. One person should be able to comprehend the entire system in at least a semi-detailed way within a few days of study.
Every commit contains a "ZealOS-YYYY-MM-DD-HH_MM_SS.iso" in the root of master, which is a timestamped ISO build of that commit. Use this ISO for installation: see the Wiki for guides on installing in [VirtualBox](https://github.com/Zeal-Operating-System/ZealOS/wiki/Installing-(Virtualbox)), [VMWare](https://github.com/Zeal-Operating-System/ZealOS/wiki/Installing-(VMWare)), and [bare-metal](https://github.com/Zeal-Operating-System/ZealOS/wiki/Installing-(Bare%E2%80%90metal)).
This is basically a read-only repository. Everything happens inside the OS, as intended by Terry. After you've installed the latest release in a VM and made your changes, you can run the `K.CC` file in the Home/ directory to build a Distro ISO. Then, use either the `mnt.sh` or `export.ps1` script to merge your changes & Distro ISO to the repo.
Alternatively, you can put individual files into a folder, and run `RedSeaISO("MyChanges.ISO", "/Home/Folder");` to package them into an ISO, then use the mount scripts to export the ISO.
Afterwards, you can make a pull request on the `master` branch. (Make sure to include either the new Distro ISO or package ISO in the pull request, since all other files on the repo are read-only and overwritten each commit: all merges are done manually.)
In around November of 2019, [VoidNV](https://web.archive.org/web/20210414181948/https://github.com/VoidNV) forked [ZenithOS](https://web.archive.org/web/20200811190005/https://github.com/VoidNV/ZenithOS) from TempleOS to continue Terry's work in a direction that would make it a viable operating system while still keeping the innovative and divine-intellect ideas and design strategies intact. At first, development occurred exclusively inside a VM and ISOs were occasionally generated as official releases, but this was scrapped and restarted from scratch. [Releases of the "old" ZenithOS are currently archived on the mega.nz website.](https://mega.nz/#F!ZIEGmSRQ!qvL6Wk6THzE-dazkfT6N3Q) The repository was removed in August of 2020, and reuploaded to [ZenithOS](https://web.archive.org/web/20210630230454/https://github.com/ZenithOS/ZenithOS). The latest archived [front page](https://web.archive.org/web/20200811190005/https://github.com/VoidNV/ZenithOS/), [master.zip](https://web.archive.org/web/20200811190054/https://codeload.github.com/VoidNV/ZenithOS/zip/master), and [related links](https://web.archive.org/web/*/https://github.com/VoidNV/ZenithOS/*) can be found on archive.org.