Efficiently searching compressed text files

In plain words

Zindex is a development tool that enables efficient searching of compressed text files by creating an index on them. Designed for developers working with large compressed datasets, it allows users to query compressed data without decompressing entire files first. The project is open source and available on GitHub for community contributions and development.

written from the facts on this page · September 2026

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  FastIndex, an open-source search engine indexation tool2024 · github.com · ▲22

  There's a lot of paid search engine indexation tools out there and I wanted to create my own. Been working as an engineer for over a decade now and my open-source contribution has always been something I wanted to do. Thus I decided to create FastIndex, an open-source search engine indexation alternative to paid solutions such as TagParrot, URLMonitor, Omega Indexer and many more. Source: https://github.com/maurocasas/fastindex Wiki: https://github.com/maurocasas/fastindex/wiki

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  PageIndex – Vectorless RAG2025 · github.com · ▲192

  Not all improvements come from adding complexity — sometimes it's about removing it. PageIndex takes a different approach to RAG. Instead of relying on vector databases or artificial chunking, it builds a hierarchical tree structure from documents and uses reasoning-based tree search to locate the most relevant sections. This mirrors how humans approach reading: navigating through sections and context rather than matching embeddings. As a result, the retrieval feels transparent, structured, and explainable. It moves RAG away from approximate "semantic vibes" and toward explicit reasoning…

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  zfind – CLI like find but using SQL syntax and also does tar/zip2024 · github.com · ▲122

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  Hey HN! I've build a simple tool to index and search your documents. This uses two great open source libraries: apache tika (for extracting content from docs) and apache lucene (for searching). It's been built with kotlin ktor as a web framework. You can index all kind of files (i.e doc, docx, xls, ppt, pdf, txt, html even ORC pdfs) and then search them using very advanced queries like "always contain X", "never contain X", "X near Y", wildcard search, proper stemming support etc. We're using it on my work where we have hundreds of thousands of doc/docx/pdf files and it works…

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