Your Own Offline
Lightweight API Client
Apicat is the ultimate offline Postman alternative that stores your .http files locally. It’s Git-friendly, open-source, and highly compatible with Postman. Test APIs offline with this powerful free offline API client designed for developers who need a reliable local API testing tool.
No Login Required
Your Data is Completely Under Your Own Control
Revolutionizing the status quo represented by tools like Postman and Insomnia. Experience the freedom of an offline API tester that puts you in complete control of your API testing tools.
Store your files locally
- 100% offline API client, and always will be.
- Store all requests and configurations directly in filesystem folders with this local API client.
- Ensures data privacy and security when you test APIs locally.
- No login or account needed; no cloud connection or syncing involved.
Collaborate via Git
- Compatible with any version control system, such as Git, CVS, etc.
- Keep API collections alongside your source code repository.
- Utilize the .http file format for each request, offering easier versioning and comparison than JSON.
Highly compatible with Postman
- No new script syntax introduced; fully compatible with Postman script syntax in this offline API testing tool that works like Postman.
- Seamless migration of Postman data to Apicat for API test offline workflows.
- Supports nearly all Postman features as a superior local API tester.
- No limitation on collections runner unlike other API testing tools.
Utilize the .http spec file format
- Store each request in the .http spec file format.
- Open format, no proprietary lock-in, no vender lock-in.
- Simpler to version and compare than JSON.
- Most modern IDEs like VSCode/Jetbrains IDEs (IntelliJ IDEA, Rider, WebStorm, etc.) support .http files, either natively or through extensions.
Open source
Apicat is a fully open-source API client with nothing to hide from you. This open-source API testing tool provides complete transparency and allows you to test APIs locally with confidence.
Simple, Elegant, and Feature-rich
Rich API request capabilities make your work unprecedentedly simple and fast. This lightweight API client delivers powerful functionality without the bloat of traditional solutions.
REST, GraphQL, SSE, gRPC
Supports all common API technologies.
Batch Send Requests
Supports sending requests from a collection in bulk.
No limitation on collections runner
Allows unlimited collection runs with this offline API testing tool, unlike Postman which limits collection runs.
Environment & Variables
Supports environments and variables, compatible with Postman.
Scripting & testing
Fully compatible with Postman scripts, allowing direct use of the pm object.
Proxy Support
Support sending requests through a custom proxy
Request Chaining
Link multiple related requests together
Import From Other Apps
Import Postman, Insomnia, OpenAPI, or cURL
Export Postman format data
Import Postman, Insomnia, OpenAPI, or cURL
Collections and Folders
Organize into Collections and nested folders
Cookie Management
Persist cookies and create multiple jars
Visual Response Previews
Render HTML, images, and more
Responsive Design
Simple interface that adapts to any window size
Paste Curl Commands
Paste a Curl command into the URL to import
Copy as Curl Command
Copy any request as a runnable Curl command
Absolutely ZERO bloat
Apicat has nothing to hide from you
Unlock the Full Potential of Your API
Try Apicat, the ultimate local API testing tool, and streamline your workflow with ease. Get started with this powerful offline API client - For Free. Experience the best local API client available today.