RAG Open Source Tools

Alternative toLlamaParse

Document parsing and ETL for LLMs, RAG pipelines, and AI agents.

• 15,583 GitHub stars
• Apache-2.0Licence Apache-2.0
• #LLM

Alternative toAugment Code

Enhance AI coding assistants with semantic code search.

• 12,610 GitHub stars
• MITLicence MIT

Alternative toPerplexity AI

Open source AI search engine that retrieves cited sources

• 11,901 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toMem0

Give your LLM agents persistent memory across every conversation

• 3,663 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toGrok Bot

Local-first AI agent that runs on your machine, drives real tools.

• 3,425 GitHub stars
• MITLicence MIT
• #LLM

Alternative toAlgolia

Hybrid search and RAG infrastructure for AI knowledge bases

• 2,721 GitHub stars
• MITLicence MIT

Alternative toAmplitude

Open source analytics infrastructure powered by ClickHouse

• 1,662 GitHub stars
• MITLicence MIT

Alternative toFivetran

Self-hosted ETL on DuckDB with 385 connectors and no per-row billing.

• 1,517 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toTavily

Open source search APIs and MCP tools for RAG and agent workflows

• 886 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI SDK

Alternative toLindy AI

Delegate reports, inbox cleanup, and workflow tasks to an AI agent

• 757 GitHub stars
• MITLicence MIT
• #LLM