What is Loader.io?

Loader.io is a free load testing service that allows you to stress test your web-apps/apis with thousands of concurrent connections.
Loader.io is a tool in the Load and Performance Testing category of a tech stack.

Who uses Loader.io?

19 companies reportedly use Loader.io in their tech stacks, including OpenLabel, DocEngage, and CybrHome.

29 developers on StackShare have stated that they use Loader.io.

Loader.io Integrations

Why developers like Loader.io?

Here’s a list of reasons why companies and developers use Loader.io
Loader.io Reviews

Here are some stack decisions, common use cases and reviews by companies and developers who chose Loader.io in their tech stack.

Julien DeFrance
Julien DeFrance
Full Stack Engineering Manager at ValiMail · | 3 upvotes · 8.5K views

I was at some point looking for a way to loadtest some of my environments, staging initially, but including production as well, ultimately, to ensure our ability to scale when facing sudden bursts of requests, and understand how it would impact our load balancers, our instances, our database server... etc.

I came across Loader.io , a service by SendGrid labs which not only allowed my team and I to loadtest our API endpoints but also simulate actual user traffic on our website.


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Volkan Özçelik
Volkan Özçelik
Chief Executive Philosopher at volkan.io · | 1 upvotes · 981 views

I use loader.io for distributed load testing.

That especially matters when you have a cross-region load-balancer and you want to make sure how your app behaves on a global scale. Loader.io

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Loader.io's Features

  • Share Graphs and Stats- anytime, anywhere
  • GUI or API- load test how you want

Loader.io Alternatives & Comparisons

What are some alternatives to Loader.io?
Loader.io is a free load testing service that allows you to stress test your web-apps/apis with thousands of concurrent connections.
Gatling is a highly capable load testing tool. It is designed for ease of use, maintainability and high performance. Out of the box, Gatling comes with excellent support of the HTTP protocol that makes it a tool of choice for load testing any HTTP server. As the core engine is actually protocol agnostic, it is perfectly possible to implement support for other protocols. For example, Gatling currently also ships JMS support.
Apache JMeter
It is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.
Locust is an easy-to-use, distributed, user load testing tool. Intended for load testing web sites (or other systems) and figuring out how many concurrent users a system can handle.
Simulate any user scenario for webapps, websites, mobile apps or web services. 100% Apache JMeter compatible. Scalable from 1 to 1,000,000+ concurrent users.<br>
See all alternatives

Loader.io's Followers
47 developers follow Loader.io to keep up with related blogs and decisions.
Vineet M
Claudiu Nutu
Dino Lai
Maarks Communication
Fadi Hanna Al-Kass
Noriaki Kadota