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Open source alternatives to Perplexity[009]

Perplexity is an AI answer engine that searches the web and returns short, cited answers with suggested follow-up questions. Below are 9 self-hostable open source alternatives, ranked by GitHub popularity.

// AI & ML№ 001
Open WebUI

Open WebUI

★ FEATUREDPYTHON

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

★ STARS

136.1k

⑂ FORKS

19.4k

OPEN PROJECT→
// AI & ML№ 002
AnythingLLM

AnythingLLM

★ FEATUREDJAVASCRIPT

Building the definitive all-in-one on-device AI productivity tool

★ STARS

59.7k

⑂ FORKS

6.5k

OPEN PROJECT→
// AI & ML№ 003
LibreChat

LibreChat

★ FEATUREDTYPESCRIPT

Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain…

★ STARS

36.7k

⑂ FORKS

7.5k

OPEN PROJECT→
// AI & ML№ 004
Khoj

Khoj

★ FEATUREDPYTHON

AI for humans

★ STARS

34.4k

⑂ FORKS

2.2k

OPEN PROJECT→
// AI & ML№ 005
Letta

Letta

PYTHON

Letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve over time.

★ STARS

22.5k

⑂ FORKS

2.4k

OPEN PROJECT→
// AI & ML№ 006
SurfSense

SurfSense

PYTHON

An open source, privacy focused alternative to NotebookLM for teams with no data limits.

★ STARS

14.1k

⑂ FORKS

1.3k

OPEN PROJECT→
// AI & ML№ 007
Scira

Scira

TYPESCRIPT

Scira (Formerly MiniPerplx) is a minimalistic AI-powered search engine that helps you find information on the internet and cites it too. Powered by Vercel AI SDK!

★ STARS

11.6k

⑂ FORKS

1.5k

OPEN PROJECT→
// AI & ML№ 008
Morphic

Morphic

TYPESCRIPT

An AI-powered search engine with a generative UI

★ STARS

8.8k

⑂ FORKS

2.3k

OPEN PROJECT→
// AI & ML№ 009
Fullmoon

Fullmoon

SWIFT

Chat with private and local large language models

★ STARS

2.3k

⑂ FORKS

223

OPEN PROJECT→

// EDITOR'S TAKE

Morphic is the closest clone of the Perplexity experience, a search-grounded answer engine with citations and generated result UI, and Scira offers much the same thing with a cleaner interface. Open WebUI is a heavier general chat front end that can do web search as one feature among many, which makes it a better daily driver but a worse pure answer engine.

// FREQUENTLY ASKED

What is the best open source Perplexity alternative?

Open WebUI is the most popular open source Perplexity alternative by GitHub stars (136,084 stars). The other 8 options are ranked above.

Are these Perplexity alternatives self-hostable?

Yes — every project listed here is open source and runs on your own infrastructure. Click into a project to see its license, stars, language, and current health status.

Are they free?

All projects shown are free and open source. Check each project's license page for the terms — most are MIT, Apache 2.0, or AGPL.

// PART OF THESE COLLECTIONS