Software Testing Platforms

Loadster

Cloud-based load testing and synthetic monitoring tool using real browsers and protocol bots.

Overview

Loadster enables load testing and synthetic monitoring with Playwright, Browser Bots, or Protocol Bots from multiple cloud regions. It supports realistic user journey scripting, real-time metrics, and automatic reporting to identify scalability bottlenecks and ensure site availability.

Updated Oct 22, 2026

7 things

What Loadster has

Apps

Browser extension

For developers

Programmatic access to the product's data and features for developers. One of 4 Software Testing Platforms tools with an API.
Run the software on your own servers instead of the vendor's cloud.
A command-line interface that lets you run the tool from a terminal or scripts. One of 5 Software Testing Platforms tools with CLI.
A Model Context Protocol server that lets AI tools connect to and act on your data. One of 5 Software Testing Platforms tools with MCP server.

For teams

Shared workspaces where multiple users can collaborate on the same content.

Support

Get help from the support team by writing to them via email. One of 4 Software Testing Platforms tools with email support.

8 features

Key Features

Performance testing
Loadster is a cloud-based performance engineering platform that uses the same scripts for load testing , stress testing , and synthetic monitoring , so you can proactively test and monitor your site's key pages and critical flows.
Load testing
Load test your site with thousands of concurrent bots to prepare for heavy traffic. Find the breaking point, identify scalability bottlenecks, and optimize performance to prevent site crashes under peak load.
Browser bots
Record scripts in your browser with Loadster's free extension and edit them visually. Add JavaScript if necessary. Browser Bots automate real headless Chrome browsers for realistic web application testing with a minimal learning curve.
Diagnostic traces
After your script runs, you can inspect requests, responses, screenshots, and errors from every step.
Managed cloud
No need install anything or set up test infrastructure! Loadster spins up fully managed cloud instances in about 2-3 minutes.
Live metrics
As each load test runs, keep an eye on the real-time graphs and tables. Observe your site's response times, throughput, and errors.
Automatic reports
Loadster automatically generates a full test report with charts and tables after each test. No more tedious manual reporting.
AI assistant control
The Loadster MCP server gives your AI assistant the ability to create Playwright, Browser Bot, and Protocol Bot scripts, as well as build load test scenarios, set up monitors, and analyze test results.

Pros and cons

Pros

Supports realistic end-to-end user journey testing with real browsers.
Scales to thousands of concurrent bots from multiple global cloud regions.
Combines load testing and synthetic monitoring using the same scripts.
Provides detailed real-time metrics and automatic test reporting.
Offers flexible pricing with monthly plans and pay-as-you-go fuel units.

Cons

Free account limits tests to 10 bots from a single region and single URL.
Higher fuel consumption for browser and Playwright bots compared to protocol bots.
No explicit mention of integrations with CI/CD or other developer tools.
Some advanced features may require scripting knowledge in JavaScript or Playwright.
Custom and enterprise plans require contacting sales, limiting immediate pricing transparency.

Developer features

Protocol bots
Protocol Bots execute scripted HTTP/S requests against your API or static website. Testing at the protocol layer is cost-effective and easily scales to hundreds of thousands of concurrent bots, and is ideal for testing HTTP APIs at scale.
Playwright scripts
Loadster runs standard Playwright Test scripts in JavaScript or TypeScript, usually with little or no modification.
Script recording
Record scripts right in your browser with the free Chrome or Firefox extension. Or add steps manually, if you prefer.
Script editing
Edit your scripts and replay them with a single bot until it works perfectly. Choose between the graphical and text editor.
Script importing
The importer accepts JMeter test plans (.jmx), k6 scripts (.js), and Locust files (.py), and it reports anything it couldn’t translate.

You?

Be the first to rate Loadster

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0 questions

Frequently Asked Questions

Community reviews

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Community reviews

Write a review

No written reviews yet. Be the first to share your experience.

7 things

What Loadster has

Apps

Browser extension

For developers

Programmatic access to the product's data and features for developers. One of 4 Software Testing Platforms tools with an API.
Run the software on your own servers instead of the vendor's cloud.
A command-line interface that lets you run the tool from a terminal or scripts. One of 5 Software Testing Platforms tools with CLI.
A Model Context Protocol server that lets AI tools connect to and act on your data. One of 5 Software Testing Platforms tools with MCP server.

For teams

Shared workspaces where multiple users can collaborate on the same content.

Support

Get help from the support team by writing to them via email. One of 4 Software Testing Platforms tools with email support.

8 features

Key Features

Performance testing
Loadster is a cloud-based performance engineering platform that uses the same scripts for load testing , stress testing , and synthetic monitoring , so you can proactively test and monitor your site's key pages and critical flows.
Load testing
Load test your site with thousands of concurrent bots to prepare for heavy traffic. Find the breaking point, identify scalability bottlenecks, and optimize performance to prevent site crashes under peak load.
Browser bots
Record scripts in your browser with Loadster's free extension and edit them visually. Add JavaScript if necessary. Browser Bots automate real headless Chrome browsers for realistic web application testing with a minimal learning curve.
Diagnostic traces
After your script runs, you can inspect requests, responses, screenshots, and errors from every step.
Managed cloud
No need install anything or set up test infrastructure! Loadster spins up fully managed cloud instances in about 2-3 minutes.
Live metrics
As each load test runs, keep an eye on the real-time graphs and tables. Observe your site's response times, throughput, and errors.
Automatic reports
Loadster automatically generates a full test report with charts and tables after each test. No more tedious manual reporting.
AI assistant control
The Loadster MCP server gives your AI assistant the ability to create Playwright, Browser Bot, and Protocol Bot scripts, as well as build load test scenarios, set up monitors, and analyze test results.

Pros and cons

Pros

Supports realistic end-to-end user journey testing with real browsers.
Scales to thousands of concurrent bots from multiple global cloud regions.
Combines load testing and synthetic monitoring using the same scripts.
Provides detailed real-time metrics and automatic test reporting.
Offers flexible pricing with monthly plans and pay-as-you-go fuel units.

Cons

Free account limits tests to 10 bots from a single region and single URL.
Higher fuel consumption for browser and Playwright bots compared to protocol bots.
No explicit mention of integrations with CI/CD or other developer tools.
Some advanced features may require scripting knowledge in JavaScript or Playwright.
Custom and enterprise plans require contacting sales, limiting immediate pricing transparency.

Developer features

Protocol bots
Protocol Bots execute scripted HTTP/S requests against your API or static website. Testing at the protocol layer is cost-effective and easily scales to hundreds of thousands of concurrent bots, and is ideal for testing HTTP APIs at scale.
Playwright scripts
Loadster runs standard Playwright Test scripts in JavaScript or TypeScript, usually with little or no modification.
Script recording
Record scripts right in your browser with the free Chrome or Firefox extension. Or add steps manually, if you prefer.
Script editing
Edit your scripts and replay them with a single bot until it works perfectly. Choose between the graphical and text editor.
Script importing
The importer accepts JMeter test plans (.jmx), k6 scripts (.js), and Locust files (.py), and it reports anything it couldn’t translate.

You?

Be the first to rate Loadster

Your review helps others make better decisions. No account needed. Takes about 10 seconds.

0 questions

Loadster

Overview

What Loadster has

Apps

For developers

For teams

Support

Key Features

Performance testing

Load testing

Browser bots

Diagnostic traces

Managed cloud

Live metrics

Automatic reports

AI assistant control

Pros and cons

Pros

Cons

Developer features

Protocol bots

Playwright scripts

Script recording

Script editing

Script importing

Be the first to rate Loadster

Frequently Asked Questions

What Loadster has

Apps

For developers

For teams

Support

Key Features

Performance testing

Load testing

Browser bots

Diagnostic traces

Managed cloud

Live metrics

Automatic reports

AI assistant control

Pros and cons

Pros

Cons

Developer features

Protocol bots

Playwright scripts

Script recording

Script editing

Script importing

Be the first to rate Loadster

Frequently Asked Questions

More in Software Testing Platforms

More in Software Testing Platforms