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ngrok vs Sauce Labs: What are the differences?
What is ngrok? Securely expose a local web server to the internet and capture all traffic for detailed inspection and replay. ngrok is a reverse proxy that creates a secure tunnel between from a public endpoint to a locally running web service. ngrok captures and analyzes all traffic over the tunnel for later inspection and replay.
What is Sauce Labs? Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup. Cloud-based automated testing platform enables developers and QEs to perform functional, JavaScript unit, and manual tests with Selenium or Appium on web and mobile apps. Videos and screenshots for easy debugging. Secure and CI-ready.
ngrok belongs to "localhost Tools" category of the tech stack, while Sauce Labs can be primarily classified under "Browser Testing".
Some of the features offered by ngrok are:
- Expose any http service behind a NAT or firewall to the internet on a subdomain of ngrok.com
- Expose any tcp service behind a NAT or firewall to the internet on a random port of ngrok.com
- Inspect all http requests/responses that are transmitted over the tunnel
On the other hand, Sauce Labs provides the following key features:
- 700+ browser/OS/device combinations for cross-browser and platform testing to improve web and mobile app quality and eliminate the overhead of internal infrastructure
- Highly reliable, on-demand cloud for enterprise-grade scalability and industry standard security
- Optimized for popular testing frameworks, CI systems, and surrounding tools and services
"Easy to use" is the primary reason why developers consider ngrok over the competitors, whereas "Selenium-compatible" was stated as the key factor in picking Sauce Labs.
ngrok is an open source tool with 16.4K GitHub stars and 2.84K GitHub forks. Here's a link to ngrok's open source repository on GitHub.
According to the StackShare community, Sauce Labs has a broader approval, being mentioned in 66 company stacks & 11 developers stacks; compared to ngrok, which is listed in 27 company stacks and 16 developer stacks.
I am looking to purchase one of these tools for Mobile testing for my team. It should support Native, hybrid, and responsive app testing. It should also feature debugging, parallel execution, automation testing/easy integration with automation testing tools like Selenium, and the capability to provide availability of devices specifically for us to use at any time with good speed of performing all these activities.
I have already used Perfecto mobile, and Sauce Labs in my other projects before. I want to know how different or better is AWS Device farm in usage and how advantageous it would be for us to use it over other mentioned tools

Stability - Just works. Availability - More than 15 datacenters. Enterprise features like SSO, local testing and SOC2/GDPR compliant.

BitBar's Dedicated Devices would be a great option for you. It allows you to dedicate (reserve) devices for your use only which also having access to all of the devices in the shared cloud. BitBar has the features and integrations that you are looking for as well.
Pros of ngrok
- Easy to use25
- Super-fast10
- Free6
- Awesome traffic analysis page5
- Reliable custom domains4
- Shares service-wide metrics1
- Mobile development1
- Supports UTP And HTTPS0
Pros of Sauce Labs
- Selenium-compatible60
- Webdriver compatible46
- Video recordings of every test35
- Qa31
- Mobile support29
- Any programming language26
- Developer tools23
- Test local and firewalled servers21
- Jenkins integration20
- Pristine VMs18
- CI Compatible17
- Appium support11
- Parallel testing9
- Rapid environment preparation8
- Mobile device support8
- Easy testing on almost any device7
- Allows me to Focus more test automation rather than IT7
- Secure testing and easy setup6
- Easy setup with CI and fast automated tests5
- Quick support response5
- Fast and reliable to host the automated tests4
- Easy to setup and understand,4
- Easy setup and integration with Travis Ci3
- Maintained browser matrix3
- Easy onboarding, do not need to manager VMs/OS/Browsers3
- Efficient tool to verify product quality2
- Teamcity Integration and mobile testing win2
- Hany for platform testing2
- Great documentation2
- Generous free trial2
- Easy. Straightforward. Scalable2
- Great way to integrate test suite on cloud2
- Simplicity of Sauce-connect2
- Very Good, Quick, flexible Infrastructure Support1
- It's great for my QA work1
- Awesome tech support1
- Having this available for CI servers is fantastic1
- Amazing service to do cloud cross browser testing1
- Depth of integrations1
- Because of its cloud based support for appium1
- Easy setup, Works great with selenium.1
- QE support1
- Manuals are not very well versed for beginners1
- Secure testing1
- Cheaper than browserstack1
- Stable1
- Simple to set up and integrate so many browser configs0
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Cons of ngrok
- Doesn't Support UDP4
- El tunel SSH cambia de dominio constantemente1
Cons of Sauce Labs
- Relatively slow2
- Expensive2