Bruno API Client Review: The Git-Friendly Postman Alternative Worth Switching To

Every developer who has worked on a team API project knows the ritual. Someone updates a collection in Postman, exports a JSON file, drops it in Slack, and prays nobody overwrites the changes. Within a week, three versions of the same collection are floating around, and nobody is sure which one is current.

Bruno, an open-source API client launched in 2022, was built specifically to kill that workflow. Instead of storing collections in a proprietary cloud format, Bruno saves every request as a plain-text .bru file on your local filesystem. That means your API collections live in the same Git repository as your code, versioned with the same commits, branches, and pull requests.

That single design decision has made Bruno one of the fastest-growing alternatives to Postman. But is it actually worth switching to? Here’s a detailed look.

What Bruno Actually Is

Bruno is a desktop API client for testing and documenting HTTP requests. It runs natively on macOS, Windows, and Linux, and supports REST, GraphQL, and gRPC. If you’ve used Postman, Insomnia, or Paw, the interface will feel immediately familiar: a sidebar of collections, a request builder with tabs for params, headers, body, and auth, and a response pane.

The difference is everything underneath.

Bruno stores collections as folders of plain-text files using its own lightweight markup language called Bru. A single request looks something like this:

meta {
  name: Get User
  type: http
  seq: 1
}

get {
  url: https://api.example.com/users/1
  body: none
  auth: bearer
}

Because these are just text files, you can open them in any editor, diff them in a pull request, and resolve merge conflicts the same way you would with source code. There’s no cloud sync, no account requirement, and no proprietary export format.

The Git Workflow Is the Whole Point

The core selling point isn’t that Bruno supports Git—it’s that Bruno is Git-native by default. You don’t export or import anything. You commit your collection folder alongside your application code.

This changes team dynamics in ways that are easy to underestimate:

  • Code review for APIs. A teammate can open a pull request that adds a new endpoint test, and you can see the exact diff. With Postman’s cloud collections, reviewing changes usually means opening the app and eyeballing them.
  • Branch-specific collections. When you’re working on a feature branch that adds a new endpoint, your API requests can live on that branch too. Merge the branch, and the requests merge with it.
  • No more “final_v3” files. Because collections are versioned, there’s a single source of truth.

For teams already living in GitHub or GitLab, this eliminates an entire category of coordination overhead.

Environment and Secret Management

Bruno handles environments through .env files and environment-specific variable files stored locally. You can define variables like {{baseUrl}} or {{apiKey}} and switch between development, staging, and production configurations.

Secrets are handled more carefully than you might expect from a young tool. Bruno supports secret variables that are stored in a separate, git-ignored file, so API keys don’t accidentally end up in your repository. It’s not a full secrets manager, but it’s a sensible default that prevents the most common mistake.

One caveat: because environments are local, onboarding a new team member means they need to populate their own secrets. That’s a feature for security, but it’s friction for onboarding.

Scripting and Automation

Bruno supports pre-request and post-response scripts written in JavaScript, running in a sandboxed environment. You can write assertions, extract values from responses into variables, and chain requests together.

The scripting API is smaller than Postman’s. If you’ve built elaborate Postman test suites with the pm.* API, you’ll need to rewrite them. Bruno offers a converter that handles many common cases, but complex scripts often require manual work.

For CI/CD, Bruno ships a CLI (bru) that runs collections headlessly. You can drop it into a GitHub Action or Jenkins pipeline and run your API tests on every commit. This is a genuinely useful feature, and it works well—though the CLI is less mature than Newman, Postman’s equivalent.

Performance and Resource Usage

Bruno is built on Electron, so it’s not lightweight in the way a native app would be. Still, users consistently report it feels snappier than Postman, which has grown into a large platform with cloud sync, mock servers, and a web app layered on top.

Memory usage is typically lower, and startup is faster. If your main complaint about Postman is that it feels bloated, Bruno addresses that directly.

Where Bruno Falls Short

No tool is perfect, and Bruno has real limitations worth knowing before you switch.

Collaboration without Git is awkward. If your team doesn’t use Git, or if you work with non-technical stakeholders who need to view collections, Bruno is a poor fit. Postman’s cloud sharing is genuinely convenient for that use case.

The ecosystem is smaller. Postman has thousands of public collections, integrations with tools like Swagger and OpenAPI, and a mature marketplace. Bruno’s ecosystem is growing but nowhere near as broad.

Documentation and API design features are thinner. Postman has evolved into a full API platform with documentation generation, mock servers, and monitoring. Bruno focuses on the client, and it does that well, but it’s not trying to replace the entire platform.

Occasional rough edges. As a younger project, Bruno has bugs, and some features are still maturing. The team ships updates frequently, which helps, but you should expect to encounter issues that a more established tool wouldn’t have.

Who Should Switch

Bruno makes the most sense for:

  • Engineering teams already using Git who want API collections versioned with code
  • Developers frustrated by Postman’s account requirements and cloud dependency
  • Privacy-conscious users who don’t want request data leaving their machine
  • Open-source projects that want contributors to submit API changes via pull requests

It’s a harder sell for teams that rely heavily on Postman’s cloud collaboration, non-developer stakeholders who need to browse collections, or organizations deeply invested in Postman’s broader platform.

The Bottom Line

Bruno’s core insight—that API collections are code and should be treated like code—is correct, and it’s surprising it took this long for a mainstream tool to embrace it. The plain-text format is simple, the Git integration is seamless, and the app is fast enough to feel like an upgrade.

It’s not a drop-in replacement for Postman in every scenario. If you depend on Postman’s cloud features, extensive integrations, or mature scripting API, the migration cost is real. But for teams that live in Git and want their API tooling to work the same way, Bruno is the most compelling alternative available today.

The best way to evaluate it is simple: install it, point it at one of your existing collections, commit the folder to a test repository, and see how it feels to review an API change in a pull request. For many developers, that moment is when the switch becomes obvious.