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Open-source alternatives to Perplexity

5 projects replace Perplexity, the AI answer engine. 4 shipped code in the last 30 days.

Perplexity Pro$20/molist price

5 open-source alternatives

Most-starred first. Stars, growth and activity are live from GitHub.

Open WebUIMost adopted

One interface for every AI model you run or connect

Stars
156.3k
Growth
+3.6k
Launched
Oct 2023
Custom licenseupdated today
Khoj#2 by stars

AI second brain for research, automation, and personal agents

Stars
37.8k
Growth
+319
Launched
Aug 2021
AGPL-3.0updated 2mo ago
SurfSense#3 by stars

Privacy-first knowledge base with any AI model you choose

Stars
16.5k
Growth
+364
Launched
Jul 2024
Apache-2.0updated 1d ago
BrowserOSGrowing fastest

The open-source Agentic browser; alternative to ChatGPT Atlas, Perplexity Comet, Dia.

Stars
14k
Growth
27/day
Launched
May 2025
AGPL-3.0updated today
Morphic#5 by stars

AI-powered answer engine with dynamic interface generation

Stars
9.2k
Growth
+48
Launched
Apr 2024
Apache-2.0updated today

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