Software Alternatives & Startups
Register | Login

Thunder Client VS RedfireForge

Compare Thunder Client VS RedfireForge and see what are their differences

Thunder Client

Rest API client for VS Code, lightweight Postman alternative

Rating
0 reviews
Alternatives Is it good?
RedfireForge

Visual API testing for HTTP, GraphQL, gRPC, WebSocket, Kafka, and SSE. Workflow designer, load testing, mock server, CLI. AGPL.

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
Thalam
OpenAI-compatible API gateway for GPT, Claude, Gemini, DeepSeek, Qwen, Kling and more. One key, one endpoint, one bill. Pay per token, no lock-in. sponsored

Which is more popular?

Developer Tools popularity
94% vs 6%
alternatives listed
218 vs 6

Base details

Website, pricing, platforms and company facts side by side.

Thunder Client
RedfireForge
Website thunderclient.com redfireforge.com
Pricing —
Open source
Platforms —
Windows Mac Linux Web +1
Company — Startup from the United States · 2026
Listed in
Developer Tools Tech APIs API Tools Project Management +2
Developer Tools Load And Performance Testing Mock Servers Kafka GraphQL Workflows API Testing gRPC +5

About Thunder Client and RedfireForge

In their own words, as submitted to SaaSHub.

Thunder Client
RedfireForge

No description of Thunder Client yet.

RedfireForge is an open-source visual API testing and load-testing workbench for HTTP, GraphQL, gRPC, WebSocket, SSE, and Kafka — all in one UI. Desktop (macOS, Windows, Linux) or browser. Same engine in CI: npm install -g redfireforge-cli Features: - Ad-hoc requests (Postman-style client +...

Read more about RedfireForge

Features and specs

What each product offers, as listed by its team.

Thunder Client 5 features
RedfireForge 8 features
  • User-Friendly Interface
    Thunder Client offers a clean and intuitive interface that makes it easy for users to create and manage API requests without getting overwhelmed by complex features.
  • VS Code Integration
    Being an extension for Visual Studio Code, it is convenient for developers who already use VS Code, enabling seamless API testing within their development environment.
  • Lightweight
    Compared to other API testing tools, Thunder Client is lightweight, making it ideal for users who need a quick and simple solution for testing APIs without extensive configuration.
  • Environment Variables
    The tool allows the use of environment variables, enabling users to manage different environments effectively and switch between them easily.
  • Support for Collections
    Supports organizing requests into collections, allowing for efficient management and categorization of related requests.

Possible disadvantages

  • Limited Advanced Features
    Thunder Client lacks some of the advanced features found in more robust API testing tools, such as automation scripts and extensive plugin support.
  • Dependency on VS Code
    As a VS Code extension, it requires Visual Studio Code to run. This dependency can be a drawback for users who prefer other code editors or standalone applications.
  • No Collaboration Features
    Unlike some other API testing tools, Thunder Client does not have built-in collaboration features, which can limit its use in team environments.
  • Platform Specific
    It is primarily designed for use within Visual Studio Code, which may not be ideal for users who work across multiple platforms or require a standalone solution.
  • Protocols
    HTTP, GraphQL, gRPC, WebSocket, SSE, Kafka
  • Workflow Designer
    Visual chain, branch, fork/join, variable extract
  • Load Testing
    Assertions, parameterized runs, results dashboard
  • API Mock Server
    Built-in, local, no extra tools
  • CLI
    npm install -g redfireforge-cli — same engine as UI
  • License
    AGPL v3
  • Desktop
    macOS, Windows, Linux (Tauri + Rust)
  • Browser
    Yes — https://demo.redfireforge.com

Analysis

An editorial look at what each product does well and who it suits.

Thunder Client
RedfireForge

Overall verdict

  • Thunder Client is a good option for developers who want a minimalistic and efficient tool for testing APIs without the need for a standalone application. It is particularly beneficial for those who use Visual Studio Code as their primary development environment.

Why this product is good

  • Thunder Client is known for its simplicity and ease of use, making it a popular choice for developers who require a lightweight API testing solution. It is integrated directly into Visual Studio Code, allowing users to manage API requests without switching between applications. It supports RESTful services and offers features like collections, environment variables, and authentication support, comparable to other tools but within a more streamlined interface.

Recommended for

  • Developers who prefer working within Visual Studio Code
  • Those who need a simple and fast tool for testing REST APIs
  • Developers looking for an alternative to more complex API testing tools
  • Teams or individuals with straightforward API testing needs and require easy sharing of request collections

No analysis of RedfireForge yet.

Videos

Walkthroughs and reviews on video.

Thunder Client 3 videos + Add
RedfireForge 0 videos + Add

Thunder Client - API testing right inside VSCode

More videos

  • - Do you really need Postman? | Use Thunder Client - VSCode extension | Easy & Lightweight
  • - Thunder client - Vscode extension | Say no to Postman

No RedfireForge videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Thunder Client
RedfireForge
94% 94%
Developer Tools
6% 6%
100% 100%
APIs
0% 0%
0% 0%
Kafka
100% 100%
100% 100%
API Tools
0% 0%

Questions & Answers

As answered by people managing Thunder Client and RedfireForge.

What makes your product unique?

RedfireForge's answer:

Six API protocols in one UI: HTTP, GraphQL, gRPC, WebSocket, SSE, and Kafka. Most tools cover one or two protocols. RedfireForge covers all six with a shared variable system, a visual workflow designer, load testing, and a built-in mock server — plus a CLI that uses the same engine as the UI. It runs as a desktop app (Tauri) or in the browser. AGPL v3, local-first, no account required.

Why should a person choose your product over its competitors?

RedfireForge's answer:

If you work with more than one protocol, you stop switching tools. HTTP, GraphQL, gRPC, WebSocket, SSE, and Kafka share the same collections, environments, and workflow graph. Load tests and mock server are built in — no extra installs. The CLI runs the same tests in CI. Current release is 0.8.x and free under AGPL v3.

How would you describe the primary audience of your product?

RedfireForge's answer:

Backend and platform engineers who test or integrate APIs across multiple protocols. Also QA engineers running load tests and developers who want a local mock server without a separate tool. Anyone tired of keeping four separate clients open for one service.

What's the story behind your product?

RedfireForge's answer:

uilt because keeping a REST client, grpcurl, wscat, and a load runner open at the same time was slowing down API work. The goal was one local-first workbench that covers the full protocol stack — HTTP through Kafka — with the same engine in the UI and in CI. Released as AGPL v3 so it can run on private networks without sending data to a cloud service.

Which are the primary technologies used for building your product?

RedfireForge's answer:

Frontend: React + TypeScript + Vite - Desktop shell: Tauri 2 (Rust) - CLI: Node.js (npm install -g redfireforge-cli) - Storage: local-first (Tauri FS / IndexedDB / localStorage) - HTTP: native (Tauri) or browser fetch

Who are some of the biggest customers of your product?

RedfireForge's answer:

  • Open source, released September 2026. No enterprise customers yet.

User comments

Share your experience with using Thunder Client and RedfireForge. For example, how are they different and which one is better?

Log in or Post with

Reviews and articles

External articles and on-site reviews we used to compare the two products.

Thunder Client no reviews yet
RedfireForge no reviews yet

We have no reviews of RedfireForge yet. Be the first one to post

Alternatives to Thunder Client and RedfireForge

When comparing Thunder Client and RedfireForge, you can also consider the following products.

Loading...