Airplane registrations (Engels)
Aankomende evenementen (Engels)
Lookup airplane details by entering its registration "number".
This software is also available for off-line use:
by Yours Truly
Like the online version it will first try Airport-data.com's API to lookup the registraion, but unlike the online version, it can also use add-ons for locally stored databases.
Every takeoff is optional. Every landing is mandatory.