https://github.com/lakernote/EasyPostman
An open-source API debugging and stress testing tool inspired by Postman and a simplified JMeter, optimized for developers with a clean UI and powerful features.
https://github.com/lakernote/EasyPostman
api api-test api-test-automation java javaswing jmeter postman tools
Last synced: 4 days ago
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An open-source API debugging and stress testing tool inspired by Postman and a simplified JMeter, optimized for developers with a clean UI and powerful features.
- Host: GitHub
- URL: https://github.com/lakernote/EasyPostman
- Owner: lakernote
- License: apache-2.0
- Created: 2025-06-18T15:17:27.000Z (9 months ago)
- Default Branch: master
- Last Pushed: 2026-03-04T06:38:39.000Z (8 days ago)
- Last Synced: 2026-03-04T12:14:06.352Z (8 days ago)
- Topics: api, api-test, api-test-automation, java, javaswing, jmeter, postman, tools
- Language: Java
- Homepage:
- Size: 16.7 MB
- Stars: 576
- Watchers: 4
- Forks: 41
- Open Issues: 10
-
Metadata Files:
- Readme: README.md
- Contributing: .github/CONTRIBUTING.md
- License: LICENSE
Awesome Lists containing this project
- my-awesome - lakernote/EasyPostman - test,api-test-automation,java,javaswing,jmeter,postman,tools pushed_at:2026-02 star:0.6k fork:0.0k An open-source API debugging and stress testing tool inspired by Postman and a simplified JMeter, optimized for developers with a clean UI and powerful features. (Java)
README
# EasyPostman
**An open-source API debugging & performance testing desktop app**
*Inspired by Postman · Powered by Java · Built for developers*
[](https://github.com/lakernote/easy-postman/blob/main/LICENSE)
[](https://github.com/lakernote/easy-postman/releases)
[](https://github.com/lakernote/easy-postman/stargazers)
[](https://openjdk.org/)
[](https://github.com/lakernote/easy-postman/releases)
[](https://github.com/lakernote)
[](https://gitee.com/lakernote)
[简体中文](README_zh.md) · [English](README.md) · [📦 Download](https://github.com/lakernote/easy-postman/releases) · [📖 Docs](docs/FEATURES.md) · [💬 Discuss](https://github.com/lakernote/easy-postman/discussions)
---
## 📖 Table of Contents
- [💡 About](#-about)
- [✨ Features](#-features)
- [📦 Download](#-download)
- [🚀 Quick Start](#-quick-start)
- [🖼️ Screenshots](#️-screenshots)
- [🤝 Contributing](#-contributing)
- [📚 Documentation](#-documentation)
- [❓ FAQ](#-faq)
- [💖 Support](#-support)
---
## 💡 About
EasyPostman provides developers with a **local, privacy-first** API debugging experience comparable to Postman, plus simplified JMeter-style performance testing. Built with Java Swing for cross-platform support, it works completely offline and includes built-in Git workspace support for team collaboration and version control.
| 🎯 Focus on Core | 🔒 Privacy First | 🚀 Performance |
|:---:|:---:|:---:|
| Simple yet powerful, rich features without bloat | 100% local storage, no cloud sync, your data stays private | Native Java app, fast startup, smooth experience |
---
## ✨ Features
### 🏢 Workspace & Collaboration
- **Local Workspace** - Personal projects with local storage
- **Git Workspace** - Version control and team collaboration
- **Multi-device Sync** - Share API data via Git repositories
- **Project Isolation** - Each workspace manages its own collections and environments
### 🔌 API Testing
- **HTTP/HTTPS** - Full REST API support (GET, POST, PUT, DELETE, etc.)
- **WebSocket & SSE** - Real-time protocol support
- **Multiple Body Types** - Form Data, JSON, XML, Binary
- **File Upload/Download** - Drag & drop support
- **Environment Variables** - Multi-environment management with dynamic variables
### ⚡ Performance Testing
- **Thread Group Modes** - Fixed, Ramp-up, Stair-step, Spike
- **Real-time Monitoring** - TPS, response time, error rate
- **Visual Reports** - Performance trend charts and result trees
- **Batch Requests** - Simplified JMeter-style testing
### 📝 Advanced Features
- **Pre-request Scripts** - JavaScript execution before requests with Redis/Kafka/Elasticsearch/InfluxDB access
- **Test Scripts** - Assertions for HTTP responses and external data-store query/write results
- **Data Store Script APIs** - Read, write, and validate Redis, Kafka, Elasticsearch, and InfluxDB directly in scripts
- **Request Chaining** - Extract data and pass to next request
- **Network Event Log** - Detailed request/response analysis
- **Import/Export** - Postman v2.1, cURL, HAR (in progress)
### 🎨 User Experience
- **Light & Dark Mode** - Comfortable viewing in any lighting
- **Multi-language** - English, 简体中文
- **Syntax Highlighting** - JSON, XML, JavaScript
- **Cross-platform** - Windows, macOS, Linux
📖 **[View All Features →](docs/FEATURES.md)**
---
## 📦 Download
### Latest Release
🔗 **[GitHub Releases](https://github.com/lakernote/easy-postman/releases)** | **[Gitee Mirror (China)](https://gitee.com/lakernote/easy-postman/releases)**
### Platform Downloads
| Platform | Package | Notes |
|----------|---------|-------|
| 🍎 **macOS (Apple Silicon)** | `EasyPostman-{version}-macos-arm64.dmg` | M1/M2/M3/M4 |
| 🍏 **macOS (Intel)** | `EasyPostman-{version}-macos-x86_64.dmg` | Intel-based Mac |
| 🪟 **Windows (Installer)** | `EasyPostman-{version}-windows-x64.exe` | Auto-update support |
| 🪟 **Windows (Portable)** | `EasyPostman-{version}-windows-x64-portable.zip` | No install needed |
| 🐧 **Ubuntu / Debian** | `easypostman_{version}_amd64.deb` | DEB package |
| ☕ **Cross-platform JAR** | `easy-postman-{version}.jar` | Requires Java 17+ |
> ⚠️ **First Run Notice**
>
> - **Windows**: SmartScreen warning → "More info" → "Run anyway"
> - **macOS**: "Cannot be opened" → Right-click → "Open" → "Open"
>
> The app is 100% open-source. Warnings appear because we don't purchase code signing certificates.
> 🌏 **Gitee Mirror** only provides macOS (ARM) DMG and Windows packages. For other platforms, use GitHub Releases.
---
## 🚀 Quick Start
### Option 1: Download Pre-built Release
1. Grab the package for your platform from [Releases](https://github.com/lakernote/easy-postman/releases)
2. Install and run:
| Platform | Command / Action |
|----------|-----------------|
| macOS | Open DMG → drag to Applications |
| Windows Installer | Run `.exe`, follow wizard |
| Windows Portable | Extract ZIP → run `EasyPostman.exe` |
| Linux DEB | `sudo dpkg -i easypostman_{version}_amd64.deb` |
| JAR | `java -jar easy-postman-{version}.jar` |
### Option 2: Build from Source
```bash
git clone https://github.com/lakernote/easy-postman.git
cd easy-postman
mvn clean package
java -jar target/easy-postman-*.jar
```
📖 **[Build Guide →](docs/BUILD.md)**
### First Steps
1. **Create a Workspace** — Local (personal) or Git (team)
2. **Create a Collection** — Organize your API requests
3. **Send Your First Request** — Enter URL, configure params, click Send
4. **Set Up Environments** — Switch between dev / test / prod easily
---
## 🖼️ Screenshots
| Home | Workspaces |
|:----:|:----------:|
|  |  |
| Collections & API Testing | Performance Testing |
|:-------------------------:|:-------------------:|
|  |  |
📸 **[View All Screenshots →](docs/SCREENSHOTS.md)**
---
## 🤝 Contributing
We welcome all forms of contribution — bug reports, feature requests, code, or docs!
| Type | How |
|------|-----|
| 🐛 Bug Report | [Open an issue](https://github.com/lakernote/easy-postman/issues/new/choose) |
| ✨ Feature Request | [Share your idea](https://github.com/lakernote/easy-postman/issues/new/choose) |
| 💻 Code | Fork → branch → PR |
| 📝 Docs | Fix typos, add examples, translate |
Every PR triggers automated checks: build, tests, code quality, and format validation.
📖 **[Contributing Guide →](.github/CONTRIBUTING.md)**
---
## 📚 Documentation
| Doc | Description |
|-----|-------------|
| 📖 [Features](docs/FEATURES.md) | Comprehensive feature documentation |
| 🏗️ [Architecture](docs/ARCHITECTURE.md) | Technical stack and design |
| 🚀 [Build Guide](docs/BUILD.md) | Build from source & generate installers |
| 🖼️ [Screenshots](docs/SCREENSHOTS.md) | All application screenshots |
| 📝 [Script API Reference](docs/SCRIPT_API_REFERENCE_zh.md) | Pre-request & test script API, including Redis/Kafka/ES/InfluxDB |
| 📝 [Script Snippets](docs/SCRIPT_SNIPPETS_QUICK_REFERENCE.md) | Built-in snippets, including data-store read/write/assert examples |
| 🔐 [Client Certificates](docs/CLIENT_CERTIFICATES.md) | mTLS configuration |
| 🐧 [Linux Build](docs/LINUX_BUILD.md) | Building on Linux |
| ❓ [FAQ](docs/FQA.MD) | Frequently asked questions |
---
## ❓ FAQ
Q: Why local storage instead of cloud sync?
We value developer privacy. Local storage ensures your API data is never leaked to third parties. Use Git workspace for team collaboration while maintaining full control over your data.
Q: How to import Postman data?
In the Collections view, click **Import** and select a Postman v2.1 JSON file. Collections, requests, and environments are converted automatically.
Q: Why does Windows/macOS show security warnings?
- **Windows SmartScreen**: No code signing cert (~$100–400/year). → Click "More info" → "Run anyway". Warnings decrease as download count grows.
- **macOS Gatekeeper**: No Apple Developer cert ($99/year). → Right-click → "Open", or run: `sudo xattr -rd com.apple.quarantine /Applications/EasyPostman.app`
This project is **fully open-source** and auditable on GitHub.
Q: Does it support team collaboration?
✅ Yes — use **Git workspace** to share collections & environments, track changes (commit/push/pull), and collaborate across devices without any cloud service.
Q: Are workspaces isolated?
Yes. Each workspace has its own collections, environments, and history. Switching workspaces provides complete data isolation.
Q: Which Git platforms are supported?
All standard Git platforms: GitHub, Gitee, GitLab, Bitbucket, and self-hosted Git servers (HTTPS or SSH).
---
## 💖 Support the Project
If EasyPostman helps you, consider:
- ⭐ **Star this repo** — it means a lot!
- 🍴 **Fork & contribute** — help make it better
- 📢 **Share with friends** — spread the word
- 💬 **WeChat group** — add **lakernote** for direct communication
- 💬 **GitHub Discussions** — [ask questions & share ideas](https://github.com/lakernote/easy-postman/discussions)
---
## ⭐ Star History
[](https://www.star-history.com/#lakernote/easy-postman&type=date&legend=top-left)
---
## 🙏 Acknowledgements
Thanks to these awesome open-source projects:
| Project | Role |
|---------|------|
| [FlatLaf](https://github.com/JFormDesigner/FlatLaf) | Modern Swing theme |
| [RSyntaxTextArea](https://github.com/bobbylight/RSyntaxTextArea) | Syntax highlighting editor |
| [OkHttp](https://github.com/square/okhttp) | HTTP client |
| [Termora](https://github.com/TermoraDev/termora) | Terminal emulator inspiration |
---
**Make API debugging easier. Make performance testing more intuitive.**
[](https://github.com/lakernote)
[](https://gitee.com/lakernote)
Made with ❤️ by [laker](https://github.com/lakernote)