At GreatFire.org, we leverage cutting-edge Chinese and Western artificial intelligence to fight censorship at scale. Our systems continuously monitor, analyze, and circumvent censorship mechanisms worldwide. Censorship authorities use AI to monitor and censor content - we use it to identify what those topics may be. The censors use AI to block access to information - we use it to find holes in their systems.
We are a China-based anti-censorship organization founded in 2011. We actively respond to and challenge censorship by the Chinese authorities. We operate several innovative projects that tackle various aspects of the censorship apparatus, many of which have utility not just in China but in other parts of the world. Our work is has been referenced in hundreds ofacademic studies and our data is frequently cited inmajor news stories. The Chinese authorities recognize the importance of our work and have tried, unsuccessfully, to disrupt our operations with unprecedented cyberattacks.
Experience true internet freedom with GreatFireVPN. Fast, secure, reliable.
Launched in 2025.
Our censorship-resistant browser uses machine learning to identify firewall weaknesses, giving users fast and seamless access to blocked websites.
Used by over 5 million people worldwide to access uncensored information.
Using AI-driven mirroring technology and a censorship-resistant app, we provide uncensored access to Wikipedia in regions where it's blocked.
Enabling millions of users to access the world's knowledge repository despite censorship.
Our website tests and evaluates censorship circumvention tools, providing real-time effectiveness data.
Testing dozens of tools to identify the most reliable censorship circumvention methods.
An Open Source C and Java Library derived from Chromium Cronet which can be used to make Android apps resistant to censorship.
Successfully delivering tools to millions of users despite sophisticated blocking attempts.
Using mirror websites and LLM-optimized landing pages, we help content creators reach audiences in restricted environments.
Helping creators bypass censorship and reach millions of readers.
Our platform monitors and detects website blocking in Mainland China in real-time. Blocky provides comprehensive data on internet censorship patterns.
Monitoring 600,000+ websites with over 14 years of accumulated data.
Apple actively censors their own App Stores all around the world and reveal few details on which apps they censor and why they engage in this censorship.
Documented over 2,500 apps unavailable in China's App Store due to censorship.
Exposing censorship on Google Play Stores, we track and report on app availability and censorship practices by Google worldwide
Monitoring 2M+ apps worldwide.
Our platform preserves and displays censored content from Sina Weibo, China's largest social media platform.
Over 2M censored posts recovered and made accessible to the public.
Using sophisticated AI algorithms, we archive and restore censored articles from WeChat public accounts, preserving vital information.
Rescued over 700k censored articles with 10+ million views.
Our system continuously monitors and archives censored content from Zhihu, China's leading Q&A platform, making knowledge accessible.
Preserving thousands of censored answers containing valuable information and perspectives.
September 05, 2025
Read More →June 04, 2025
Read More →August 10, 2023
Read More →March 18, 2022
Read More →November 18, 2014
Read More →October 27, 2014
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Read More →June 01, 2014
Read More →June 10, 2013
Read More →January 23, 2013
Read More →January 03, 2013
Read More →December 21, 2012
Read More →December 19, 2012
Read More →October 16, 2012
Read More →October 02, 2012
Read More →July 12, 2012
Read More →The Wall Street Journal
Read More →"When people think about whether or not to support GreatFire, one of the things to remember is this isn't a huge organization with a large amount of funding. They're having a huge, huge impact on a very small budget."
- Jimmy Wales, founder of Wikipedia
Source →"Their solution is simple, replicable, and something that other people can iterate and build on within different contexts."
- Dan Meredith, formerly Open Technology Fund
Source →"There were too many points in the original statement."
- Microsoft, responding to censorship allegations listed by GreatFire.org
Source →"The Chinese government is a firm defender of network security, firmly opposes any form of cyber attacks, and investigates and severely cracks down on cyber attacks launched in China or using Chinese network facilities in accordance with the law."
- Cyberspace Administration of China
Source →"Due to an error in our system, we triggered an incorrect results removal notification for some searches noted in the report."
- Stefan Weitz, Microsoft
Source →"If these reports are true, we are concerned that Apple may be enabling the Chinese government’s censorship and surveillance of the Internet."
- Senator Ted Cruz and Senator Patrick Leahy
Source →"The operational deployment of the Great Cannon represents a significant escalation in state-level information control: the normalization of widespread use of an attack tool to enforce censorship by weaponizing users."
- Citizen Lab
Source →"Chinese authorities appear to have blocked U.S. film and television production company HBO’s website after comedy show “Last Week Tonight with John Oliver” aired a segment criticizing President Xi Jinping for censorship."
- Time Magazine
Source →