Is there some sort of database of re-usable Ada software components?
You might want to join ACM SigAda (see question 5.3) in order to subscribe to Ada Letters. They publish a list of reusable components on an annual basis. In fact, it is more of a list of lists, in that it mentions places that have sets of reusable components. The maintainer of the Ada Letters “master list” is levine@sun490.fdu.edu (also levine@vax.fdu.edu). To our knowledge this list is NOT available online. Check also the software repositories, mentioned above (question 9.2.1).