I wanted to let you know we've created a dedicated page for all developer documentation about our different APIs.
Apart from the best known one for the RIPE Database REST API, there is also documentation for the RIPE NCC LIR Portal API, giving you access to all your (private) resource information, such as ASNs, IPv4 and IPv6 allocations, Assignment Window history, PI assignments, Legacy space, etc.
In addition, there is also an IP Analyser API, giving you the ability to get an overview of all the assignments you've made, what available free space you have in your allocations and all invalid assignments that require your attention.
Lastly, there are APIs for RIPE Stat and RIPE Atlas data, providing you with a wealth of Internet measurements, data analysis and statistics.
Have a look at http://ripe.net/developers
Cheers,
Alex Band Product Manager RIPE NCC