Bruno API Client Review: The Git-Friendly Postman Alternative Tested

API clients have quietly become some of the most opinionated tools in a developer’s stack. Postman dominates the category with millions of users, but it has also accumulated cloud accounts, workspaces, sync layers, and a pricing model that pushes teams toward paid tiers. Bruno, an open-source API client launched in 2022, takes the opposite approach: your collections live as plain-text files in a folder you choose, and Git does the syncing.

I spent several weeks using Bruno for real API work—building collections, writing tests, chaining requests, and collaborating through a Git repository—to see whether the offline-first pitch holds up. Here’s what worked, what didn’t, and who should consider switching.

What Bruno Actually Is

Bruno is a desktop API client for macOS, Windows, and Linux, built with Electron. It handles the usual tasks: sending HTTP requests, organizing them into collections, managing environments, and running assertions against responses.

The architectural difference is the file format. Instead of storing requests in a proprietary database or syncing them to a vendor cloud, Bruno saves each request as a .bru file—a small, human-readable text format. A typical request file looks roughly like this:

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

get {
  url: {{baseUrl}}/users/{{userId}}
  body: none
  auth: inherit
}

Folders map to directories, and the whole collection is just a folder tree. You can open it in VS Code, diff it in a pull request, and resolve merge conflicts the same way you’d handle any other code.

Bruno is developed by USEBRUNO, with a business model built around a paid “Golden Edition” for teams plus optional cloud sync. The core client is free and open source under the MIT license.

The Git Workflow Is the Real Feature

Most API clients treat version control as an afterthought—an export button, a JSON blob, or a paid add-on. Bruno makes it the primary workflow.

In practice, this means a few concrete things:

Diffs are readable. When a teammate changes a header or updates a test assertion, the pull request shows exactly that line. No opaque blobs, no “collection updated” with no detail.

Merge conflicts are survivable. Because each request is its own file, two people editing different endpoints rarely collide at all. When they do edit the same request, you get a normal text conflict.

Onboarding is a git clone. New team members clone the repo, open the folder in Bruno, and they have the full collection—no invite links, no workspace permissions, no seat management.

Secrets stay out of the repo if you’re careful. Bruno separates environments into files, and you can keep sensitive values in a local-only environment file that you add to .gitignore. This is a manual step, not an automatic safeguard, and it’s the biggest footgun in the whole design.

For teams already living in GitHub or GitLab, this fits existing review culture instead of creating a parallel one. That’s the strongest argument for Bruno, and it’s not a marginal one.

Using Bruno Day to Day

The interface will feel familiar to anyone who has used Postman or Insomnia. A left sidebar holds collections; the main pane has tabs for params, headers, body, auth, and tests. Response rendering covers JSON, XML, HTML, images, and raw text, with a searchable response pane.

Scripting uses JavaScript. Pre-request and post-response scripts run in a sandboxed runtime, and the API is deliberately Postman-like—bru.setEnvVar(), req.getBody(), res.getStatus()—which softens migration. You can write tests with expect() assertions in a Chai-style syntax:

test("returns 200", function() {
  expect(res.getStatus()).to.equal(200);
});

Request chaining works through variables set in scripts, so you can authenticate, capture a token, and feed it into subsequent requests. Bruno also supports collection runners that execute folders or entire collections in sequence, with a summary of pass/fail results—enough for smoke tests, though not a replacement for a full CI test suite.

Import and export cover Postman collections, OpenAPI specs, Insomnia, and OpenCollection. In my testing, importing a mid-sized Postman collection preserved requests, folders, and most scripts, with occasional manual fixes around auth inheritance.

Performance is fine. Startup is quick for an Electron app, and large collections (hundreds of requests) stay responsive. It’s not a lightweight native binary, and memory usage sits in the same range as other Electron clients.

Where Bruno Falls Short

No tool wins everywhere, and Bruno’s trade-offs are real.

Collaboration without Git is weak. If your team doesn’t use version control for API collections—or includes non-engineers who won’t—Bruno’s model is friction. The paid cloud sync helps, but it’s an add-on rather than the default experience.

Ecosystem and integrations lag. Postman has a vast public API network, mock servers, monitoring, and deep CI integrations. Bruno’s CLI (bru) runs collections headlessly and works in pipelines, but the surrounding ecosystem is thinner.

Secrets management is on you. As mentioned, nothing stops you from committing an API key. Postman’s cloud model has its own risks, but Bruno shifts responsibility squarely to the user.

Some rough edges remain. The project moves fast, and long-time users have seen features shift between versions. Documentation has improved but still trails the polish of commercial competitors. Certain advanced auth flows and GraphQL tooling are less mature than in Postman.

No built-in mock server. If you rely on Postman’s mocking to unblock frontend work, you’ll need another tool.

Who Should Use Bruno

Bruno fits best with:

• Engineering teams that already review code together. If your API collection can live next to your services in the same repo, Bruno’s value is immediate.
• Developers who dislike vendor lock-in. Plain files mean you can read, script, or migrate your collections without asking permission.
• Privacy-conscious users. Requests stay on your machine by default. Nothing is sent anywhere unless you configure sync.
• Open-source projects. Contributors can propose API changes through the same pull request flow as code.

It fits less well for teams that need hosted collaboration, non-technical stakeholders in the API workflow, or heavy reliance on Postman’s network and monitoring features.

Bruno vs. Postman, Briefly

The comparison isn’t really about features—Postman wins on breadth. It’s about where your source of truth lives. Bruno bets that for many teams, that should be a Git repository.

The Verdict

Bruno’s core insight is simple and correct: API collections are code, and code belongs in version control. By making requests plain-text files, it turns collection management into a normal engineering workflow—reviewable, diffable, and portable. The client itself is capable and comfortable, if not yet as feature-rich as Postman.

If your team lives in Git and values ownership of its tooling, Bruno is worth a serious trial. Clone a repo, open a collection, and watch a pull request review an API change. That moment usually decides it.

For everyone else—especially teams needing hosted collaboration or a broad integration ecosystem—Postman remains the safer default. Bruno is a strong alternative, not a universal replacement, and it’s honest about which developers it’s built for.