jina : Jina is a neural search framework that allows to build deep learning search applications in minutes. It provides scalable indexing, querying, understa...
Sourcegraph : Sourcegraph Server is a free, self-hosted code search server that integrates with your code host and supports multi-repository, regexp, and diff searc...
Freebase : A community-curated database of well-known people, places, and things
TinEye Reverse Image Search : TinEye is a reverse image search engine. It finds out where an image came from, how it is being used, if modified versions of the image exist, or if t...