Our API directory now includes 73 management APIs. The newest is the Jupix API. The most popular, in terms of mashups, is the BuzzData API. We list 6 BuzzData mashups. Below you'll find some more stats from the directory, including the entire list of management APIs.
The 600 million numbers that Truecaller has in its directory have been collected via crowd-sourcing. Truecaller’s users can share their contacts and in return they get access to search in the collaborative database. Thanks to this collaborative data solution, the directory is growing and being updated continuously. It also contains numbers that no other directories have, e.g. pre-paid phones.