Quinterest
Quinterest is a question database/search engine. It was created by Rohit Lalchandani, and is now maintained by Jacob Reed. Quinterest allows users to search through question sets that have been stored within its database, and users can choose to filter results by difficulty (middle school, high school, college, open) or by subject. One can also choose to search for words in just the answerline or words in the answerline and question.
With the introduction of Version 1.0, bonus question searching capability was added, though it is still limited in scope. Quinterest is currently on Version 1.0.1.
While the search functions are an improvement over Quizbowl DB, Quinterest only has about the same amount of or fewer questions, and often truncates questions or sticks them together. Users can report errors for fixing.