Apparently it couldn't withstand all the traffic from HN (potentially due to all the server side python). It's up again now. You can always download it and try

Apparently it couldn't withstand all the traffic from HN (potentially due to all the server side python). It's up again now. You can always download it and try it locally: http://www.mathics.org http://www.mathics.org Edit: If anyone is interested in getting involved, we are always looking for contributers. The full code is on github: https://github.com/poeschko/Mathics https://github.com/poeschko/Mathics