Ultrasurf website


Ultrasurf platforms

Platform Speed Stability
Android - -
Windows 142 kbps 91%

Ultrasurf protocols

Other: Other protocol.

Ultrasurf performance

by month | year



Number of tests

All Tests

Created At Platform Location Median Speed Stability
2017-01-30 Windows 250.31 100.00%
2017-01-30 Android 213.12 100.00%
2017-01-24 Windows 149.58 95.24%
2017-01-23 Windows 73.08 71.43%
2017-01-23 Windows 197.06 100.00%
2017-01-21 Windows 34.42 100.00%
2017-01-17 Windows 45.52 88.10%
2017-01-17 Windows 42.64 83.33%
2017-01-15 Android 124.42 97.62%
2017-01-15 Android 293.91 88.10%
2017-01-14 Windows 144.87 100.00%
2017-01-11 Windows 122.03 100.00%
2017-01-10 Android 414.47 100.00%
2017-01-10 Windows 546.99 100.00%
2017-01-10 Windows 349.85 100.00%
2017-01-09 Windows 39.08 59.52%
2016-12-29 Windows 69.87 100.00%
2016-12-28 Windows 181.54 97.62%
2016-12-26 Windows 137.59 92.86%
2016-12-26 Windows 132.42 100.00%
2016-12-26 Windows 40.74 88.10%
2016-12-26 Windows 41.81 45.24%
2016-12-26 Windows 124.92 95.24%
2016-12-26 Windows 120.40 97.62%
2016-12-22 Windows 198.57 100.00%
2016-12-22 Android 123.78 95.24%
2016-12-11 Windows 136.63 95.24%
2016-12-09 Android 64.69 92.86%
2016-12-09 Android 333.76 61.90%
2016-12-08 Windows 254.87 100.00%
2016-12-04 Android 234.65 100.00%
2016-12-04 Windows 248.80 100.00%
2016-12-03 Windows 632.16 97.62%
2016-12-03 Windows 451.19 100.00%
2016-12-03 Windows 416.58 100.00%
2016-12-02 Windows 513.37 100.00%
2016-12-02 Windows 335.22 100.00%
2016-12-02 Windows 1174.52 97.62%
2016-11-29 Windows 3042.14 100.00%
2016-11-01 Windows 159.43 100.00%
2016-10-22 Windows 372.38 80.95%
2016-10-16 Windows 478.05 97.62%
2016-10-14 Windows 130.37 100.00%
2016-10-11 Windows 129.29 100.00%
2016-10-11 Windows 100.04 100.00%
2016-10-10 Windows 857.03 100.00%
2016-10-04 Mac OS 1051.49 100.00%
2016-09-27 Android 214.47 100.00%
2016-09-22 Android 250.79 100.00%
2016-09-21 Linux 133.98 100.00%
2016-09-21 Linux 355.72 100.00%
2016-09-21 Linux 162.13 100.00%
2016-09-20 Linux 291.35 100.00%
2016-09-20 Linux 332.54 97.62%
2016-09-19 Linux 280.10 100.00%
2016-09-18 Linux 300.76 100.00%
2016-09-17 Linux 336.54 100.00%
2016-09-16 Linux 318.27 100.00%
2016-09-16 Windows 302.36 100.00%
2016-09-16 Linux 316.78 100.00%
2016-09-16 Linux 214.37 100.00%
2016-09-16 Linux 380.98 100.00%
2016-09-15 Linux 305.85 97.62%
2016-09-15 Linux 168.24 100.00%
2016-09-15 Linux 322.23 90.48%
2016-09-14 Linux 194.05 100.00%
2016-09-14 Linux 222.00 100.00%
2016-09-14 Linux 160.16 100.00%
2016-09-13 Linux 296.88 100.00%
2016-09-13 Linux 330.28 100.00%
2016-09-13 Linux 302.63 100.00%
2016-09-13 Linux 173.97 100.00%
2016-09-13 Linux 272.91 100.00%
2016-09-12 Linux 237.20 100.00%
2016-09-03 Windows 308.11 85.71%
2016-08-29 Windows 中国大陆 山东省 269.55 95.24%
2016-08-27 Android 中国大陆 江苏省 57.90 90.48%
2016-08-27 Android 中国大陆 江苏省 31.11 92.86%
2016-08-22 Windows China (Mainland) 江苏省 151.07 92.86%
2016-08-12 Windows 中国大陆 广东省 173.59 97.62%
2016-08-11 Android China (Mainland) 北京市 134.44 95.24%
2016-07-28 Windows 中国大陆 江苏省 85.15 90.48%
2016-07-28 Windows 中国大陆 江苏省 85.20 92.86%
2016-07-28 Windows 中国大陆 江苏省 141.65 100.00%
2016-07-27 Windows 中国大陆 上海市 119.90 100.00%
2016-07-22 Windows 中国大陆 河南省 137.80 100.00%
2016-07-12 Windows China (Mainland) 上海市 284.22 100.00%
2016-07-10 Windows 中国大陆 浙江省 140.00 100.00%
2016-07-06 Windows 中国大陆 江苏省 263.58 100.00%
2016-07-05 Windows China (Mainland) 四川省 340.00 90.48%
2016-06-27 Windows 中国大陆 48.20 61.90%
2016-06-27 Windows 中国大陆 52.39 66.67%
2016-06-15 Android 中国大陆 黑龙江省 314.94 85.71%
2016-06-03 Android China (Mainland) 山东省 36.83 90.48%

Discuss Ultrasurf

Frequently Asked Questions

Why should I buy my circumvention service on Circumvention Central?

  • You can download the latest Android client without Google Play.
  • You can download and install the latest Windows client to your computer without circumventing.
  • You can use Alipay to buy any service.
  • Bilingual installation guides.
  • Bilingual customer support.
  • Support all of GreatFire's work including FreeBrowser and FreeWeibo.

How do you measure the speed of a circumvention tool?

The speed test that we have developed aims to reflect the real user experience. While a visitor to the site runs a test, in the background, their browser is downloading resources from the ten most popular websites in the world. According to Alexa, these sites are Google, Facebook, YouTube, Baidu, Amazon, Yahoo, Wikipedia, QQ, Twitter and Microsoft Live. The speed reported is simply the size of the file downloaded divided by the time taken to download it. We also verify whether the downloaded resource is complete. If the contents returned are incorrect or if the download fails to complete within 40 seconds, we mark it as failed. This data is then used to calculate our other main indicator - stability.

Other speed tests typically just measure download and upload speed by sending a couple of requests to the speed test server itself. The reported speed is not reflective of the user experience because normal browsing involves frequently sending lots of requests (not downloading or uploading one big file) to many different servers, not just one.

Why do you measure the stability of a circumvention tool?

Stability is typically not tested by other services at all. A healthy internet connection anywhere is supposed to deliver 100% stability, unless someone pulls the cable during the test. But using a circumvention tool in China is different. At any point, the connection can become unstable and/or go down completely. Individual requests may fail depending on the size of the request, the final destination and how they are proxied. Thus comparing service stability is just as important if not more important than comparing speed.

Can I test any circumvention tool on the site?

You can use our speed and stability tests with any circumvention tool, whether it is listed on our site or not. VPN users from around China will be able to test their tool on the site and those results will be added to our data. This data will be available for all to see.

Can I see the inner workings of your tests?

Tech savvy users can inspect how we conduct our tests by reviewing our javascript code.

Does GreatFire.org make money if I subscribe to a circumvention tool on this site?

One of the objectives in launching CC is to generate revenue for GreatFire.org. At the moment GreatFire relies on the kindness of individuals who send us donations and from a host of grant-making organizations around the world. We want to reduce our reliance on these organizations and set GreatFire.org on a path of self-sustainability. Visitors to the CC site will be able to purchase any paid-for tool that we currently test. GreatFire will act as a reseller of these tools in China and as such we will be given a portion of each sale by the VPN providers themselves. Users need not be based in China to purchase a circumvention service.

How does CC compare to other VPN review websites?

There are a host of websites that provide “VPN reviews” and “VPN ratings”. But anybody who has visited those sites can quickly see that they act as referral and marketing sites for a small subset of VPN providers and that most of those services do not work in China.

Where did you find those VPNs?

We used this great list of VPNs put together by That One Privacy Guy. We took that list and recruited a team of testers across China and tested almost every tool to see what works and what does not. It will come as little surprise to those in China to know that a very small number of these tools actually work in China.

Do we think that the authorities will use our website to crackdown on VPNs that work?

It would be very easy to completely block all VPNs if the authorities wanted to. However, we believe that they have not because of the importance of allowing access for businesses and for others. The goal of CC is simply to make it easier for all to find the circumvention tools that work the best.

Your tests tell me that my favorite tool does not work but it’s working great for me, what gives? Your tests tell me that my favorite tool works but it’s not working for me, what gives?

Test results can vary according to location, the service you are using to connect to the internet and your device. As more people use this site to test their circumvention tools, we will accumulate more data and will be able to develop a clearer idea of what is working and what is not.

How do you measure “stability”?

When you test your tool on our site in the background we download a certain number of images. If these images do not download or take more than 40 seconds to download then we consider this to be a failed test of stability and we calculate a percentage based on the number of images we attempted to download during the test.

Circumvention Central / GreatFire.org VPN Terms of Service:

Dear user, to provide a better experience, before purchasing a VPN service please carefully read through our terms:

  1. All the VPN services are provided by the respective VPN provider and not by Circumvention Central.
  2. If when using the VPN service you cannot connect to the service or find the service to be unstable, there can be several causes:
    1. Problems with your device or software.
    2. Problems originating from the VPN provider itself.
    3. The Great Firewall has temporarily or permanently blocked the VPN service.
    In case of (a), our customer service will try to assist you in resolving the problem. In the case of (b) or (c), we will alert the VPN provider of the problem and assist them in resolving it.
  3. We provide test data that helps you find a VPN provider that works well. However, if the VPN provider that you selected still does not work for you, we cannot provide a refund. Before choosing a VPN provider, please carefully review the performance data, user reviews or register a free trial account first (if available).

By purchasing a VPN service, you agree to these terms.