BitKey is a Debian-based live distribution containing specialist utilities to perform highly secure air-gapped Bitcoin transactions. It contains a swiss army knife of handy Bitcoin tools that support a wide range of usage models, including a few very secure ones which would otherwise be difficult to perform. The system boots into one of the three available modes: "cold-offline" - for creating a wallet and signing transactions; "cold-online" - for watching the wallet and preparing transactions; "hot-online" - standard usage but less secure as the private keys are known to the computer which is connected to the internet. BitKey also provides tools for generating "brainwallets", for the most paranoid of Bitcoin users. The live CD provides a simple desktop based on the Metacity window manager with quick links to the Bitcoin tools and Chromium for web browsing.

https://bitkey.io/

https://distrowatch.com/table.php?distribution=bitkey