Cost / License
- Free
- Open Source
Platforms
- Self-Hosted


Elasticsearch is described as 'Unmatched relevance. Real-time insights. Anything is possible — when the precision of search meets the intelligence of AI' and is a popular Search Server in the development category. There are more than 50 alternatives to Elasticsearch for a variety of platforms, including Web-based, Linux, Self-Hosted, Mac and SaaS apps. The best Elasticsearch alternative is Algolia. It's not free, so if you're looking for a free alternative, you could try Algolia or Apache Solr. Other great apps like Elasticsearch are OpenSearch, Manticore search, Vespa and Searchspring.


An intelligent yet easy-to-install site search for any website. Simply start typing to get search autosuggestions and semantically enriched structured data at your fingertips.




Zevi is a site search engine that is build with NLP and AI at its core. With Zevi a customer can easily pass through your website and give back ranked results based on the businesses preference. Zevi makes site Information discovery a breeze.





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...

Pagefind is a fully static search library that aims to perform well on large sites, while using as little of your users’ bandwidth as possible, and without hosting any infrastructure.

Adds a customizable search box to your web pages and show fast, relevant results powered by Google Search.




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.

SearchUnit is the modern, flexible, fully featured ASP.NET search engine component for your web applications. Free Community edition available.


Sooqr is an instant & relevant onsite search engine for both product & content. Hassle-free installation - up and running within 15 minutes, and no developer needed. Sooqr Search is cloud-based, faceted & customisable.




Historically, software platform vendors have created lock-ins for customers that building on their stacks. Open source has provided greater freedom and reduced investments for applications projects. The so-called Platform As A Service (PaaS) offerings from the cloud providers...
Enonic is a CMS not a search engine