Http Rest Client and Load Testing for Windows

Use WebSurge to create, capture or import Http requests and play them back for individual Request testing. Or, use WebSurge for full-on load testing with a battery of simultaneous requests.

WebSurge makes it quick to create and edit requests, and displays results in an easy to read result display that shows a single, easy to understand view. You can even edit requests right in the result display. A command line interface lets you automate and integrate load tests in your own environments. WebSurge provides many features of Postman with a cleaner interface and faster workflow.

Easily share your sessions via the plain text Json file format that you can share amongst multiple developers in source control or by copying simple files or text content. Sessions can also be shared online, so you can easily pick up where you left off on another machine.

Our goal with WebSurge is to make the Http request and load testing quick and easy, so you can easily use it in your day to day work flow. And hey, it might even be a little bit of... fun!

Features

Rest Client Http Testing

Easily create, capture & import Http requests
Test and run individual requests
Test HTML, REST and SOAP services
Easy to parse results view
Many UI optional support features
Share sessions in your Git repos
shared online sessions support
Slicker & quicker alternative to Postman

Load Testing

Run any session as a load test
Easy to read test run results
Test local or remote sites
Unique User support
Export results to Json, Xml, Html
Command line test runner
Run tests on local infrastructure/VPN
Extensible via .NET Addins

Capture and Import Requests

Manually create and edit sessions
Built-in Http request capture tool
Import from OpenAPI or Swagger
Import from Postman,
      Fiddler and Visual Studio
Plain text, sharable session files
Get it

You can check out WebSurge for free by downloading the fully functional, non-limited evalution version.

Version:
v3.0.2   what's new
Released:
October 5, 2025

You can also install West Wind WebSurge using the Chocolatey Package Manager:

Chocolatey 
c:\> choco install WestwindWebSurge

WinGet 

c:\> winget install websurge

West Wind WebSurge is licensed software and continued use requires a purchased license.

Requirements

Microsoft Windows 11-10 or 2024-2012
.NET 9.0 Desktop Runtime (installed w/ setup)
WebView2 Runtime (installed w/ Windows)