Apache Solr

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Invention

Domain

Science and technology

Knowledge cost

2

In collections

Nobody has pulled it yet.

What Wikipedia says

Solr (pronounced "solar") is an open-source enterprise-search platform, written in Java. Its major features include full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, database integration, NoSQL features and rich document (e.g., Word, PDF) handling.

Excerpt from the Wikipedia article “Apache Solr”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Apache Software Foundation, Apache License 2.0, via Wikimedia Commons.