Obelisk indexes past agent sessions (Claude Code, Codex, Kimi Code, Pi) into a queryable SQLite database with a CLI skill for agents and an Electron app for humans.

Diskover Community Edition - Open source file indexer, file search engine and data management and analytics powered by Elasticsearch

PySonar2: a semantic indexer for Python with interprocedual type inference

🚢 Ultra-Fast Multichain Indexer

Low latency indexer service for blockchain data.

Decentralized, account-centric programmable indexing network for web3. Supports blockchain explorers, on-chain portfolios, social graphs, and ZK coprocessors. Open-source EVM-compatible indexer available.

Neo4j .NET Driver v6 — IDriver lifecycle, DI registration (singleton), ExecutableQuery

Dark Web & Deep Web Search Engine. Data Crawler and indexer for Darkweb , OSINT Tools for the Dark Web

A modular indexer for Cardano with an SQL Postgres backend (an alternative to the well known cardano-db-sync)