Search a folder of documents and check answers against them. Offline: no API key or database.
Free
One server, in search. Search a folder of documents and check answers against them. Offline: no API key or database.
Search
Search a folder of documents and check answers against them. Offline: no API key or database.
The rest either hold an API key issued by the publisher or ask for nothing.
Listed without a verification tick. Read the listing before installing.