Slumber is a terminal-based HTTP client for working with REST and other HTTP services.
It uses YAML request collections that can be stored locally and shared through version control, making it suitable for repeatable API workflows, team collaboration, and scripted use. It offers both an interactive terminal interface and command line usage, with the same collection format shared across both modes.
This is free and open source software.
Key Features
- Uses source-first YAML request collections that are designed to be stored locally and shared.
- Supports profiles for switching between environments and other reusable template values.
- Can import external formats including Insomnia, OpenAPI, VSCode .rest, and JetBrains .http collections.
- Builds requests dynamically from templates, files, shell commands, prompts, and previous responses.
- Lets you extract response data with JSONPath selectors for more flexible request chaining.
- Provides a native Python package for using Slumber collections in Python scripts.
Website: github.com/LucasPickering/slumber
Support:
Developer: Lucas Pickering
License: MIT License

Slumber is written in Rust. Learn Rust with our recommended free books and free tutorials.
Related Software
| Alternatives to curl | |
|---|---|
| Wget2 | Successor of Wget |
| Wget | Makes retrieving large files or mirroring entire web or FTP sites easy |
| aria2 | Multi-protocol and multi-source command-line download utility |
| HTTPie | HTTP client with an intuitive user interface |
| curlie | The power of curl, the ease of use of httpie |
| xh | Fast and friendly tool for sending HTTP requests |
| hurl | Run and test HTTP requests with plain text |
| TerminusDM | User-friendly terminal interface for managing your downloads efficiently |
| getparty | HTTP download manager with multi-parts |
| Restish | CLI for interacting with REST-ish HTTP APIs |
| Posting | Terminal-based HTTP client for developing and testing APIs |
| Slumber | Terminal-based HTTP client |
| Command line HTTP clients | |
|---|---|
| HTTPie | Command line interface, cURL-like tool for humans |
| aria2 | Multi-protocol and multi-source command-line download utility |
| Wget2 | Successor of Wget |
| Posting | Terminal-based HTTP client for developing and testing APIs |
| hurl | Run and test HTTP requests with plain text |
| curl | Command line tool for transferring data with URL syntax. Transfer library too |
| axel | Command-line download accelerator |
| xh | Fast and friendly tool for sending HTTP requests |
| Wget | Retrieves content from web servers |
| Restish | CLI for interacting with REST-ish HTTP APIs |
| curlie | The power of curl, the ease of use of httpie |
| Slumber | Terminal-based HTTP client |
| TerminusDM | User-friendly terminal interface for managing your downloads efficiently. |
| getparty | HTTP download manager with multi-parts |
Read our verdict in the software roundup.
Explore our carefully curated directory of recommended free and open source software, covering every major software category.The directory forms part of our extensive collection of articles for Linux enthusiasts. It includes hundreds of detailed reviews, together with free and open source alternatives to proprietary software from companies such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. LinuxLinks also covers interesting projects worth exploring, Linux-compatible hardware, free programming books and tutorials, and much more. Know a useful free and open source Linux application that we haven’t covered? Tell us about it using our submission form. |


Please read our Comment Policy before commenting.