OpenSearchServer is described as 'Open source application server allowing development of index-based applications like search engines. Main features of OpenSearchServer are : An integrated crawler for databases, web pages and rich documents; a user friendly GUI allowing development of most' and is a Search Server in the development category. There are more than 25 alternatives to OpenSearchServer for a variety of platforms, including Web-based, Self-Hosted, Linux, Mac and Windows apps. The best OpenSearchServer alternative is Elasticsearch, which is both free and Open Source. Other great apps like OpenSearchServer are Algolia, OpenSearch, Apache Solr and Pagefind.
i-Search Pro changes the way of WordPress Search. It’s full WooCommerce compatible. Provide Live search results in milliseconds. Include almost everything in your search results.
Xapian is an open source probabilistic information retrieval library, released under the GNU General Public License (GPL). It is a full text search engine library for programmers. It is written in C++, with bindings to allow use from Perl, Python, PHP, Java, Tcl, C#, Ruby, and...
Ambar is a smart documents archive with automated crawling, OCR, deduplication and ultra-fast full-text search. Imagine having billion of files in different formats like xls, doc, txt, pdf, ppt, etc..., in any encoding.
SearchUnit is the modern, flexible, fully featured ASP.NET search engine component for your web applications. Free Community edition available.
Canada
Expertrec custom search started as a replacement for google site search. It adds super-fast search autocomplete, spell correct, search listing pages to your website.
India
Search over millions of documents, and give to your users unique, amazing and unforgettable experiences.
Spain
EU
Cludo is a powerful search solution to your website. It is built on top of Elasticsearch which means you do not have to do any further developing, or hire any developer concerning site search. Cludo's focus is to deliver an easy to use search engine with the greatest support...
DenmarkEU
Simplify how agents connect to enterprise data. Build high-impact AI apps with one centralized solution for agentic retrieval-augmented generation (RAG) workflows.
TinySearch is a lightweight, fast, full-text search engine. It is designed for static websites.
Enterprise search, simplified. Cloud-based enterprise search solution that search across all of your organization’s content sources — Aconex, Procore, Dropbox, Microsoft Sharepoint, Onedrive, and more.
United Kingdom
ParadeDB is a modern Elasticsearch alternative built on Postgres. Built for real-time, update-heavy workloads.
United States
Adds a customizable search box to your web pages and show fast, relevant results powered by Google Search.
United States
