I'm looking at developing an app where one of the functions I would like to implement needs to use data which is normally available in AIP, like:

• Aerodrome names, ICAO codes, GPS location, elevation
• VFR reporting point names, GPS location
• Nav points (names, locations)

In addition, I may want to display or use data from NOTAMs, METARs, TAFs, etc in my app.

Does anyone know the official sources for this data, ideally published by CAAs (FAA in the US, Eurocontrol in the EU and similar)? Please note I'm really only interested in programmatic access (e.g. a JSON, XML or similar feed available through a web API or similar), as opposed to document based data in the form of PDF or HTML files.

It goes without saying that I would ideally like this access for free, but a commercial arrangement is also I would look at - provided it's not outrageously expensive.