BlazeMeter vs k6: What are the differences?

Developers describe BlazeMeter as "The Load Testing Platform for Developers". 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.
. On the other hand, k6 is detailed as "Developer centric open-source load and performance testing tool". It is a developer centric open source load testing tool for testing the performance of your backend infrastructure. It’s built with Go and JavaScript to integrate well into your development workflow.

BlazeMeter and k6 belong to "Load and Performance Testing" category of the tech stack.

Some of the features offered by BlazeMeter are:

• 100% JMeter Compatible- Take full advantage of JMeter’s scripting capabilities or let our auto-scripting feature take care of the details.
• Scalable and Realistic- Easily scale from 100 to 300,000+ concurrent users using realistic visitor behaviour and browser simulation.
• Start Testing in 2 Minutes- Use up to 100 dedicated servers per test. No setup or installation required. Self-service and on-demand.

On the other hand, k6 provides the following key features:

• Written in Go and JavaScript, built to integrate well into the modern developer workflow and automation pipelines
• Primarily for load testing, it also works for functional testing of APIs and microservices with its powerful JS ES6 based scripting API
• Straightforward CLI, sharing many UX aspects with the DevOps tools you already use

k6 is an open source tool with 5.57K GitHub stars and 287 GitHub forks. Here's a link to k6's open source repository on GitHub.