There are 3 repositories under live-cd topic.
(Yes, the project is still alive 😃) This procedure shows how to create a bootable and installable Ubuntu Live (along with the automatic hardware detection and configuration) from scratch. A Linux to call your own.
A fork of SystemRescue (formerly SystemRescueCd) with ZFS built-in and serial console access enabled for all boot options. Download bootable ISOs from the releases page.
natickOS - A minimal, lightweight, research Linux Distribution
Modified bionicpup64-8.0 with added crypto tools: doubleslow, doublerandom, RFC1751-encoding-decoding and others.
A Debian live-build configuration for a LiveCD containing tools for a computer science course
Android x64: The LiveCD build for Android 9, try out 4 different editions of Android-x64+9 before installing it
Copy of the code and configuration from the Metadistros' project. Recovered from old SVN repository.
Debian kernel packages for servers running on minimal Live CDs