Dev tools · alternatives · 2026

24 alternatives to Thunder Client CLI

A new way to test APIs inside VS Code

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Thunder Client CLI launched in 2023; newer entries below may have overtaken it.

1
Thunder Client▲246
Rest API client for VS Code, lightweight Postman alternative
2021 · thunderclient.com · its alternatives →
2
Apidog Fast Request▲512
Develop APIs fast + automatically detect endpoints
2025 · fastrequest.apidog.com · its alternatives →
3
Apidog▲570
Development teams often struggle with using multiple tools like Postman and Swagger for API design, development, and testing. This fragmented approach leads to outdated API specs and chaotic collaboration. So we built Apidog: a single, unified API platform for team collaboration. It has a beautiful interface that makes it easy to create API spec, generate request data from API spec, validate responses, create mock data, orchestrate test scenarios, and publish API documentation. Apidog = Postman + Swagger + Mock + JMeter.
2024 · apidog.com · its alternatives →
4
Cosine CLI▲334
AI pair programming directly in your terminal
2025 · cosine.sh · its alternatives →
5
Clobbr▲444
Easy API endpoint load testing without breaking the bank
2023 · clobbr.app · its alternatives →
6
Swytchcode▲465
Give agents reliable access to 2,000+ APIs w/ durable state
Nov 2025 · swytchcode.com · its alternatives →
7
TestMace▲136
Work with an API and create automated tests without coding
2019 · testmace.com · its alternatives →
8
EntelligenceAI VSCode Extension▲279
Review your code directly in your IDE before you even merge!
2025 · marketplace.visualstudio.com · its alternatives →
9
vscode Testing Playground▲92
Bring testing playground into VS Code
2021 · marketplace.visualstudio.com · its alternatives →
10
inlang VSCode Extension (Beta)▲100
Extension for i18n codebases making developers life's easier
2023 · inlang.com · its alternatives →
11
Open-source CLI coding framework using Claude▲84
AI powered cli coding agent that monitors your dev/test server and fixes errors and adds features - vysakh0/dravid
2024 · github.com · its alternatives →
12
Gatling AI Assistant for VS Code▲103
AI-powered load testing, right inside your IDE
Oct 2025 · marketplace.visualstudio.com · its alternatives →
13
agents-cli▲145
The CLI your coding agent uses to ship agents
Jul 2026 · github.com · its alternatives →
14
Fetch Client▲78
REST client extension for VS code, alternative to Postman
2022 · marketplace.visualstudio.com · its alternatives →
15
I Built Open Source Claude Code Alternative, but Better at API Testing▲13
Hi! My name is Herve Kom, a computer science student that is interested in learning new things everyday! As one of my graduation project, I have developed a Claude Code -like Coding CLI, but with enhancement for API Testing: - Auto-generate & run tests (unit, e2e, Playwright, CI/CD, etc.) - Say bye-bye to hallucinations with built-in MCP Server to let LLM directly read from API Docs - Adding Agent.md support for better context persistence across your whole codebase - Automatic bug & security scans (logic is kind of basic but works great!) - Vibes, I want it to feel less "enterprise" but…
2025 · github.com · its alternatives →
16
A CLI project tool for VSCode with devcontainer support▲17
A CLI/TUI that simplifies launching VSCode projects, with a focus on dev containers - michidk/vscli
2023 · github.com · its alternatives →
17
Krinql▲92
An AI powered suite of developer tools
2021 · krinql.com · its alternatives →
18
We built a tool that automatically generates API tests▲108
Hi, this is Mish and Sebastian. We are working on Step CI - a fully automated API testing platform for developers. Step CI works programming-language independent and for different API paradigms (REST, GraphQL, XML). Our CLI and test runner are available on GitHub (https://github.com/stepci) under the MPLv2 license. Since our last launch, Step CI is now able to generate automated tests for your API based on your OpenAPI (Swagger) spec. This saves you a lot of time as you never have to write and maintain your tests again! We would like to invite you to try our tool and give us…
2022 · stepci.com · its alternatives →
19
TextBin▲104
A privacy focused open source alternative to paste bin
2024 · marketplace.visualstudio.com · its alternatives →
20
I open sourced the CLI of my API Testing Framework▲16
The main repo for APITrakr, an API testing framework. - apitrakr/packages/cli at main · apitrakr/apitrakr
2023 · github.com · its alternatives →
21
A Fast HTTP Request CLI Powered by HTTL▲53
First HTTP programming language
2025 · httl.dev · its alternatives →
22
Qodex▲88
Qodex turns test knowledge into durable scenarios that evolve with your product and run in GitHub pull requests, the CLI, chat, schedules, and deploy checks.
2025 · qodex.ai · its alternatives →
23AC
A CLI to kick-start any language▲28
I'm working on a CLI that helps you create the boilerplate of your project in multiple languages and frameworks. In case of front-end frameworks/libraries, with cli you'll be able to create the project, set up git on your local, add the UI-framework, testing framework, and linting, and in the future releases you'll be able to even add pre-designed components. The CLI currently supports React, Angular, Vue, Svelte and Node.js will be released today. Also soon, you'll be able to deploy your applications to AWS with a single command. Appreciate your feedbacks and all the contributions are…
2022 · its alternatives →
24
React Vscode CLI▲77
React VSCode framework to build custom extensions easily
2023 · npmjs.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →