SearchEngineSuite

TL;DR: A small C-based search engine using TF-IDF and BM25, with optional proximity search. Includes indexers, query daemons, terminal clients, and a web interface.

Search Engine Suite is a compact C-based search engine built around TF-IDF and BM25 scoring, with optional proximity search. It includes fast indexers, query daemons (secure and non-secure), terminal clients, and a lightweight Node.js web interface. The system is designed to be simple, transparent, and easy to understand - no external databases or heavyweight dependencies, while still supporting multiple search modes, pagination, sorting, and preview features.

Disclaimer: This is not a search engine that indexes the whole internet - it was never meant to be. But having said that, TF-IDF and especially BM25 are the classical scoring methods used by early search engines, and BM25 still serves as the first-stage retrieval method in modern systems.

(Above screenshots were taken using an older browser because I prefer the 3D look over the flat UI style of modern browsers. Here's a more modern browser)

This project provides a complete search engine stack implemented in C. It includes:

The design emphasizes speed and simplicity. Index files are plain, memory-mapped structures; daemons keep them loaded for fast queries; and the web interface remains lightweight and easy to inspect.