[OSM-newbies] displaying longitude, latitude and **altitude** of set of points

[Xan]

     Hi,

I have a set of points with (longitude, latitude, altitude). How is the 
best program (in your opinion) for displaying that in OSM. Because OSM 
has not "built-in" altitude, I could display in opencyclemap layer or 
similar. Alternatively, the altitude could be indicade (as a text) to 
(longitude , latitude) point.

In Google Earth you could do that. Is there any free alternative? Nasa 
worldwind?

Does anyone know it?

Regards,
Xan.