Haystack
Open-source orchestration framework for building production LLM apps, RAG and agents.
✨ Try AgentScout's free AI image generator →Good for: automating workflows, building AI agents, building multi-agent systems, working with documents
Use cases
About Haystack
Haystack is listed in our frameworks category and is aimed at builders. Open-source orchestration framework for building production LLM apps, RAG and agents. Pricing, as the maker states it: Open source + cloud. Maturity: Mature. We last checked the official link on 2026-10-16.
Haystack alternatives
Other frameworks tools in our directory. See all frameworks tools →
Orca Agent Engine
Open Apache-2.0 runtime to build, run, and govern managed agents with choice of harness (Claude Agent SDK, Codex, Pi) and model; open-sourced Oct 6, 2026 (Developer Preview).
Ruflo
Open-source multi-agent meta-harness for Claude Code, Codex, and MCP clients; Oct 13 release adds Mods (mission workflows) and a single control plane with human approval.
Hermes Agent (Nous Research)
Open-source agent harness; v0.21.7 stable shipped Oct 12, v0.22.0 RCs Oct 13-14.
OpenAI Agents SDK (Python)
OpenAI's Python SDK for building multi-agent workflows; v0.23.0/0.23.1 released Oct 1-2.
LangChain Deep Agents
Library for long-running agents with subagents and skills; 0.7.23 (Oct 7) adds pinned_skills.
LangGraph
Framework for stateful, graph-based agent workflows.
Badge for makers
Built Haystack? Add this badge to your README or site. It links back to this page. About badges
