pisa-engine/pisa

Health v2 · maintenance only

Adoption not part of the score

1054 stars · 76 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

PISA is a C++ text search engine and toolkit for building inverted indexes over large document collections. It provides parsing, indexing, sharding, index compression, and query processing algorithms designed for information retrieval research and experimentation.

Use cases

• build an inverted index over a large document corpus like Wikipedia
• experiment with state-of-the-art index compression methods
• run Boolean AND/OR and ranked queries against an in-memory index
• research faster query processing algorithms for search
• shard and reorder documents for efficient retrieval
• prototype a full-text search engine in C++

When to choose

• you need a high-performance, open-source search engine for research experiments
• you want to benchmark or compare index compression and query algorithms
• your corpus is large and must be searched from an in-memory inverted index

When to avoid

• you need a production search service with APIs, facets, and replication out of the box
• you require API stability, as releases make no backwards-compatibility guarantees
• you want a plug-and-play search solution rather than a research toolkit

Facets

library · maturity active

search-engine parser developer-tools cross-platform cli inverted-index index-compression query-processing cpp research document-reordering sharding search information-retrieval algorithms linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="pisa-engine/pisa")