Cloudy is a spectral synthesis code designed to simulate conditions in interstellar matter under a broad range of conditions. It is provided for general use under an open-source
[License](License).
Please post **questions or problems** on the Cloudy [discussion board](https://cloudyastrophysics.groups.io).
Please post **__questions or problems__** on the Cloudy [discussion board](https://cloudyastrophysics.groups.io).
Updates to Cloudy will be announced on that board.
<strong><em>Welcome to our new server for nublado.org</em></strong> Our previous host has gone out of business and the U Ky IT group has generously offered their support.
