Haystack

Open-source AI orchestration framework for building production-ready agents and RAG pipelines.

Visit Haystack →

Categories
Agent Frameworks
Pricing
Free Open source, Enterprise support available
Est. monthly spend
Light Free · Medium Free · Heavy Free (est.)
Open source (LLM API costs extra). Rough estimates from vendors' public pricing, checked 28 Oct 2026. Not exact — always check the vendor.
Website
https://haystack.deepset.ai
Added
18 Aug 2024
RAGpipelinesopen sourceagents

Compare: Best free AI tools for indie devs

Similar tools

LangChain

Open agent platform for building, testing, deploying, and monitoring LLM applications.

Agent Frameworks free

Est. monthly spend: Free–$39/mo · est.

Visit → Details

AgentKit by Scalekit

New

MCP gateway that lets production agents use 30,000+ tools across 600+ apps (GitHub, Salesforce and more) with per-user auth, so each action runs as the user who asked within their granted scopes. Virtual MCP servers limit each agent to the tools it needs, plus custom connectors, triggers and full call logs. Launched on Product Hunt Nov 3 2026.

Agent Frameworks freemium

Est. monthly spend: Free–$99/mo · est.

Visit → Details

Composio

New

Gives AI agents and coding agents managed-auth access to 1,500+ app toolkits (GitHub, Slack, Notion and more) through SDKs, a CLI and an MCP gateway. The new Composio Instant lets agents pay for paid tools on their own.

Agent Frameworks freemium

Est. monthly spend: Free–$29/mo · est.

Visit → Details

Hy Memory

New

Tencent Hunyuan's open-source memory framework and MemHub app that give agents long-term memory, including shared coding history across Claude Code, Cursor, Codex and OpenCode.

Agent Frameworks free

Est. monthly spend: Free · est.

Visit → Details