20 Onyx alternatives
Onyx: Open-source AI chat and enterprise search platform that indexes your team's apps, with agents, deep research and self-hosted or cloud deployment. 20 apps do similar work, most sharing RAG, Open Source and Knowledge Base, ranked by how much they have in common with Onyx.
Why look for a Onyx alternative? Onyx's free plan comes with paid upgrades; 5 alternatives below are free outright. Several also cover Agents, Chatbot and Developers, which Onyx's listing does not mention.
Onyx vs. the top 5 alternatives
| App | Pricing | Free plan | Category | Compared with Onyx |
|---|---|---|---|---|
| Onyx | Freemium | Yes | Business & Productivity | The app these are compared with |
| Glean | Subscription | No | Business & Productivity | No free plan; Also covers Integrations and Semantic Search |
| MagiCrew | Freemium | Yes | Business & Productivity | Also covers Agents and Multi-agent |
| Cloudflare OS | Free | Yes | Business & Productivity | Free to use; Also covers App Builder and Chatbot |
| Firecrawl | Freemium | Yes | Data & Analytics | Also covers API and Data Extraction |
| Langflow | Free | Yes | Automation & Workflows | Free to use; Also covers Agents and MCP |
All 20 Onyx alternatives
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Glean Technologies, Inc.
Enterprise Work AI platform — permission-aware search across every company app, plus an assistant and agents that act on the results.
vs Onyx: No free plan · Also covers Integrations and Semantic Search
Shared with Onyx: Enterprise, Knowledge Base, RAG, Search
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Multi-agent workspace where teams hire reusable "digital employees" — an orchestrator runs specialists in parallel and returns finished decks, dashboards, reports and Excel files.
vs Onyx: Also covers Agents and Multi-agent
Shared with Onyx: Enterprise, Knowledge Base, Open Source, Self-Hosted
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Cloudflare
Open-source AI workspace you deploy into your own Cloudflare account: agent chat wired to company context, sandboxed app building, and policy guardrails.
vs Onyx: Free to use · Also covers App Builder and Chatbot
Shared with Onyx: Enterprise, Open Source, Self-Hosted
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Turn any website into clean markdown or structured JSON — crawling, JavaScript rendering, and extraction in one API.
vs Onyx: Also covers API and Data Extraction
Shared with Onyx: Open Source, RAG, Self-Hosted
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IBM (DataStax)
Open-source, MIT-licensed visual builder for AI agents, RAG apps and MCP servers, maintained by IBM's DataStax and extensible in Python.
vs Onyx: Free to use · Also covers Agents and MCP
Shared with Onyx: Open Source, RAG, Self-Hosted
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A self-hosted, feature-rich chat interface that puts a polished front end on Ollama and any OpenAI-compatible API.
vs Onyx: Free to use · Also covers Chatbot and Local Models
Shared with Onyx: Open Source, RAG, Self-Hosted
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Notion
One tool that does it all. Search, generate, analyze, and chat—right inside Notion
vs Onyx: Also covers Diagrams and Notes
Shared with Onyx: Knowledge Base, Search
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Mintplex Labs
An all-in-one private AI workspace: chat with your documents, run agents, and keep everything on your device.
vs Onyx: Free to use · Also covers Local Models and Local-First
Shared with Onyx: Knowledge Base, RAG
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Instantly provide support with your custom AI agent
vs Onyx: No free plan · Also covers Chatbot and Customer Support
Shared with Onyx: Knowledge Base, RAG
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AI concierge agents for support at scale, with a supervision layer that turns transcripts into improvements.
vs Onyx: No free plan · Also covers Chatbot and Customer Support
Shared with Onyx: Enterprise, Knowledge Base
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Inkeep
Open-source, local-first markdown editor and knowledge base that Claude, Codex, and Cursor can read and write directly.
vs Onyx: Free to use · Also covers Local-First and Notes
Shared with Onyx: Knowledge Base, Open Source
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Open-source platform for running a standing team of AI agents — you hire, schedule and review them, and they keep working while you are offline.
vs Onyx: Also covers Agents and Collaboration
Shared with Onyx: Open Source, Self-Hosted
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A coding agent built for very large codebases, with a context engine that indexes millions of lines.
vs Onyx: No free plan · Also covers Code Generation and Coding Agent
Shared with Onyx: Enterprise, RAG
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Retool
Retool's AI layer: generate internal apps from prompts on live company data, plus AI workflows and hourly-billed agents with enterprise controls.
vs Onyx: Also covers Agents and App Builder
Shared with Onyx: Enterprise, RAG
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An Apache-2.0 TypeScript framework for building AI agents — workflows, memory, RAG and evals — with a local studio and an agentic software factory on top.
vs Onyx: Also covers Agents and Coding Agent
Shared with Onyx: Open Source, RAG
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Vectify AI
A vectorless RAG engine that builds a tree index of long PDFs and lets an LLM reason its way to the right section, with page-level citations.
vs Onyx: Also covers Document Processing and MCP
Shared with Onyx: Open Source, RAG
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Evokoa
Turn a Postgres database into working memory for AI agents — relational rows, graph traversal and vector search fused into one ranked, token-budgeted context block.
vs Onyx: Also covers Agent Memory and PostgreSQL
Shared with Onyx: Open Source, RAG
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An open-source AI-native database combining vector search, structured filtering, and built-in model integrations.
vs Onyx: Also covers Embeddings and Semantic Search
Shared with Onyx: Open Source, RAG
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The framework and observability platform most teams use to build, debug, and ship LLM agents.
vs Onyx: Also covers Developers and Evaluation
Shared with Onyx: Open Source, RAG
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LangGenius
An open-source platform for building production LLM applications — visual workflows, RAG, and agents in one place.
vs Onyx: Also covers API and Developers
Shared with Onyx: Open Source, RAG