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Context window optimization for AI coding agents. Sandboxes tool output (98% reduction), persists session memory, and enforces routing across 17 platforms via MCP + hooks.

Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch ⚡ 🔍 ✨ Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences

Paperless-ngx is a document management system that transforms your physical documents into a searchable online archive so you can keep, well, less paper.

📜 诗泉：高性能中国古诗词 API 服务

Air-gapped, privacy-focused, open-source NotebookLM alternative. AI agent that researches, transforms, and edits your documents. Join our Discord:

The enterprise world model built by DeepLethe. It is the first open substrate for knowledge engineering that learns passively and governs itself.

A self-hostable bookmark-everything app (links, notes and images) with AI-based automatic tagging and full text search

Whole-disk file search for macOS: fuzzy names, typo tolerance, indexed content grep. 1 ms over 8M files.

SurrealDB is a multi-model database built in Rust designed to unify multiple data models into a single engine.

Self-hosted, Gmail-style mail client. Multi-account IMAP, threaded conversations, real-time push via IMAP IDLE + Mercure. Built with Symfony, FrankenPHP, Hotwire Turbo.

This project is licensed under the MIT License - see the LICENSE file for details.

Turso is an in-process SQL database written in Rust, compatible with SQLite. It runs in production today at multiple organizations.

Open source observability platform for logs, metrics, traces, RUM (web, android, ios), Session replay, pipelines, SLO and LLM observability.

Joplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.

Elasticsearch is a distributed search and analytics engine, scalable data store and vector database optimized for speed and relevance on production-scale workloads. Elasticsearch is the foundation of Elastic's open Stack platform.

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.

Local-first session search, analytics, insights, and token use statistics for coding agents, supporting Claude Code, Codex, and more than 20 other agents.

\ Run it as a server, declared as code; hundreds of agents operate and enrich the graph on parallel isolated branches, and every change is reviewed and merged safely.

Get going fast by using a static web server or GitHub Pages with this ready-to-use Docsify Template, review the quick start tutorial or jump right into a CodeSandbox example site with the button below.

Our hosted service, Chroma Cloud, powers serverless vector, hybrid, and full-text search. It's extremely fast, cost-effective, scalable and painless. Create a DB and try it out in under 30 seconds with $5 of free credits.

Hister is a private search engine for the pages you visit and the files you keep. It indexes their full contents so you can find information again from the web interface, terminal, or an AI assistant connected through MCP.

A self-hosted library for your ebooks, comics, and audiobooks

Deep memory for agents over large datasets. Leviathan is a single static binary that turns your records (JSONL, JSON, CSV/TSV, SQLite, or anything a database CLI can export) into a ranked full-text index.

Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust

OpenSearch is an open-source, enterprise-grade search and observability suite that brings order to unstructured data at scale.

🦔 Fast, lightweight & schema-less search backend. An alternative to Elasticsearch that runs on a few MBs of RAM.

Apache Doris is a real-time analytics and hybrid search database for AI agents.

search every screenshot you've ever taken by the text inside it. native linux, offline, PaddleOCR + sqlite + gpui

默认配置位于 src/main/resources/application.yaml，也可以通过环境变量覆盖。