Google Mini is described as 'The Google Mini is a smaller and lower-cost solution for small and medium-sized businesses to set up a search engine that allows them to index and search up to 300,000 documents' and is a Search Server in the Development category. There are more than 10 alternatives to Google Mini, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Self-Hosted solutions. The best alternative is elasticsearch, which is free. Other great sites and apps similar to Google Mini are Algolia (Free Personal), Apache Solr (Free, Open Source), Azure Search (Freemium) and Expertrec Search Engine (Paid).
Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and JSON APIs. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document handling.
Azure Search makes it easy to add powerful and sophisticated search capabilities to your website or application. Quickly and easily tune search results and construct rich, fine-tuned ranking models to tie search results to business goals.
Unlimited Searching No restrictions on; number of searches, index size, document limit or file types you can index. Best UX available Our latest AJAX based end user interface is smooth and quick, exactly what users will expect.