Xapian
Xapian is an open source search engine library that allows developers to add advanced searching capabilities to their applications. It supports features like full text and boolean search, spelling correction, query expansion, relevance ranking, and more.
Xapian: Open Source Search Engine Library
Xapian is an open source search engine library that allows developers to add advanced searching capabilities to their applications. It supports features like full text and boolean search, spelling correction, query expansion, relevance ranking, and more.
What is Xapian?
Xapian is an open source search engine library that allows developers to add advanced searching capabilities to their applications. It is written in C++ and has bindings for many programming languages like Python, PHP, Java, C#, and Ruby.
Some key features of Xapian include:
- Full text search - Xapian indexes all terms in documents added to it and allows fast full text search across huge datasets.
- Boolean search - Supports combining terms with AND, OR, NOT operators.
- Spelling correction - Auto correct typos and suggest alternative spellings.
- Query expansion - Automatically expand/rewrite queries to match more documents.
- Relevance ranking - Rank results by relevance using term frequencies, document length etc.
- Supports traditional databases like PostgreSQL and NoSQL databases like MongoDB as its backend.
- Sharding and replication - Horizontally scale across servers.
Xapian is very flexible and versatile. It can be used to build search capabilities in a variety of applications like websites, intranets, document management systems, mail search utilities etc. Its speed and scalability make it suitable even for large scale deployments.
Xapian Features
Features
- Full text search
- Boolean search
- Spelling correction
- Query expansion
- Relevance ranking
- Indexing of documents
- Support for multiple languages
Pricing
- Open Source
Pros
Open source
High performance
Scalable
Advanced search capabilities
Well documented
Active development community
Cons
Steep learning curve
Limited out-of-box UI features
Requires programming knowledge to implement
Not as widely used as some commercial options
Official Links
Reviews & Ratings
Login to Review4.2
★
★
★
★
★
3 reviews
Rating Breakdown
Ease of Use
★
★
★
★
★
3.0
Features
★
★
★
★
★
5.0
Value for Money
★
★
★
★
★
5.0
Customer Support
★
★
★
★
★
3.7
Overall Experience
★
★
★
★
★
4.0
Recent Reviews
david_walker80
Mar 07, 2026
★
★
★
★
★
Powerful but complex search library
Xapian is incredibly powerful and flexible for building custom search features, with its relevance ranking and query expansion working well. However, the learning curve is steep, documentation can be scattered, and integrating it feels like building the search engine yourself …
riley_moore72
Mar 07, 2026
★
★
★
★
★
Powerful and Flexible Search Toolkit for Developers
Xapian has been a game-changer for adding professional search functionality to our internal document management system. The boolean search and relevance ranking work incredibly well, and the query expansion feature helps users find what they need even with imperfect terms. …
lmiller6896
Mar 07, 2026
★
★
★
★
★
A Powerful and Flexible Search Engine Library
As a developer building a content-heavy application, I needed a robust search solution, and Xapian has been a game-changer. Its comprehensive features, like full-text search and relevance ranking, are easy to integrate, and the performance is consistently reliable even with …
Rating Distribution
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