I still continue to use eXistDB for WoS and NASA/ADS
APIs help to connect information curpuses
NASA/ADS system is very powerfull and especially it’s modern UI on top of SolR backend. I recently extend my xquery module dedicated to ADS to take advantage of it’s API.
This is now very easy to interoperates and crosscheck some corpuses from various sublists. This work would not have been possible since eXistDB and the API module helped me to create more than hundred lists.
I should distribute the code, but have too many choice and have difficulties to choose the besti :( .Anyway, please ask for it!