Insomnia

Insomnia Core is a robust REST API and GraphQL client for Mac, Windows, and Linux that includes cookie management, environment variables, code creation, and authentication. Specify the URL, payload, headers, and authorization in one place. Then simply press submit. Get all the details on each response. View the status code, body, headers, cookies, and more! Create workspaces and folders, drag-and-drop requests, and quickly import and export data. The application is more than just an HTTP client! Insomnia Rest is collaborative, free, open-source, and cross-platform, making it an ideal tool for individuals and teams. 

Never repeat yourself.
Reuse common values such as API keys and session IDs. Define environment variables globally or transition between sub-environments to ensure a smooth development/production workflow. 

Write less code and produce code snippets.
Create code snippets for over 30 language libraries, including Curl, NodeJS, Go, Swift, Python, Java, C, and more.

Love the experience.
Insomnia's easy UI allows you to get started quickly and customize your experience with nine unique color themes.

Manage environments.
Reuse API keys or session identifiers. Define environment variables globally or transition between sub-environments to ensure a smooth development/production workflow.

Custom themes
Get started immediately with Insomnia's easy Core interface, then customize your experience with nine diverse themes.

Features and Highlights

• GraphQL support
• OAuth 1.0 and 2.0 auth
• Multipart form builder
• Query parameter builder
• Plugin System
• SSL client certificates
• JSONPath and XPath
• Response history
• Data import/export
• Rendered HTML preview
• Image and SVG preview
• AWS authentication
• Configurable proxy
• Color themes
• Cloud sync and sharing
• Import from curl
• Digest, Basic, NTLM Auth
• Nunjucks templating
• Configurable timeout
• HAR import
• Swagger import
• Request filtering
• Toggle SSL validation
• Keyboard shortcuts
• Usable at almost all sizes
• NTLM authentication
• Responsive interface
• Autocomplete Hints
• Redirect chain visualization

Note: Limited functionality in the demo version.