Open source Apache Solr alternatives
Every project in the catalog is MIT, Apache or BSD licensed. 1 projects explicitly describe themselves as a Apache Solr alternative; 0 more are in the category where Apache Solr is a typical product.
Projects that call themselves a “Apache Solr alternative”
Source: the project's GitHub description or README.
Tantivy
100quickwit-oss · Search Engines
Alternative to (project's own claim): Elasticsearch, Apache Solr
Common commercial products in this category: Algolia, Elastic Cloud, Azure AI Search
- In Rust projects, you use it as a full-text search library without the need for an external server.
- You make advanced searches within documents with natural query language, word phrase searches, and range queries.
- With multi-language support and a customizable tokenizer, you index text in different languages.
- • Website is unreachable (checked: 2026-10-31)
- ↑ PositiveHacker News
Tantivy – full-text search engine library inspired by Apache Lucene
“I recently deployed Quickwit (based on Tantivy, from the same team) in production to index a few billion objects and have been very pleased with it. Indexing rates are fantastic. Query latency is competitive. Perhaps most importantly, separation of compute and storage has proven…”
- ↑ PositiveHacker News
Tantivy – full-text search engine library inspired by Apache Lucene
“I started working on a personal project a few years ago, after being insanely frustrated with the resource hog that is elasticsearch. That is coming from someone who's personal computer has more resources than what a number of generous startups allocate for their product. I…”