All data is from OpenAip.net
Included countries are:
Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Slovakia, Spain, Sweden, Switzerland, United Kingdom.
Select your countries via the "Countries" tab
Show airports of selected countries, either as a list or on a map. Selecting one airport shows the airport on map. Details like runways and radio frequencies can be shown.
If data is wrong or missing you can update at openaip.net after signing in as an administrator.