The Kiva API allows anyone to develop applications that use the data from Kiva loans. Below are screenshots from two Kiva loan apps.

Kiva loans by country of borrower – source Kivadata.org

Kiva Ads allows the creation of widgets that can be integrated in any website automatically showing current loan requests by predefined parameters (it seems to show ads for a split second between loans, if I am not mistaken):

These applications make the impact of microfinance via Kiva visible on third websites and contribute to the further growth of Kiva.