Good morning,
CFMU provides since the beginning of this week a free access to its NOP (Network Operations Plan) portal. You can get official and reliable information on the status of european airspaces (overloaded airspaces for exemple) in real time, for a future (strategic and tactic tabs) or past (post-operations) period.
It provides also with access to other services of CFMU like the ATFM Information Messages (AIM) or the European AIS Database (EAD) for exemple.
https://www.cfmu.eurocontrol.int/PUBPORTAL/gateway/spec/index.html
Any comments are more than welcome (I work at CFMU as you may guess ;-))