Here are top 5 replacements for Google search appliance.
- Expertrec– Expertrec is a hosted Site Search solution that can help you deliver relevant results effortlessly, with advanced cloud search technologies and setup solutions. It comes with a powerful crawler and other advanced search as you type features.
- Elastic search –Elasticsearch is a search engine based on Lucene. It provides a distributed, multi tenant capable full-text search engine with an HTTP web interface and schema-free JSON documents. Requires coding knowledge to set up. Their paid versions are 79$ + .
- Apache Solr–Scalable, feature-rich search server out there. A F/OSS (free or open sources software) out-of-the-box solution from Apache Software Foundation and used by organizations such as Netflix, AOL, CNet etc. Many companies have moved from GSA moved to Solr.
- Microsoft Sharepoint–Microsoft sharepoint includes a lot of features and improvements targeted towards enterprise search. Crawl and content processing, Indexing, query processing, search administration and search analytics.
- Amazon cloudsearch– Amazon CloudSearch is a managed cloud service with which you can set up a search application. Has support for 34 languages and has standard search features like autosuggest. highlighting, geo search and more.