The search function of this website was built using Webonary
Webonary gives language groups the ability to put their dictionaries on the web with a minimum of technical help. Each dictionary is built around a search bar, which looks for a word (or part of a word) throughout the dictionary, and returns the most relevant results to the top of the list.
Webonary, in turn, is built on top of WordPress
The dictionary database is stored in SIL's Fieldworks Language Explorer