Bruno vs Postman: Is the Open-Source Git-Friendly API Client Worth Switching To?

Postman has been the default answer to “how do I test this API?” for nearly a decade. It has millions of users, a polished interface, and a feature set that stretches from simple GET requests to full API lifecycle management. But in 2023, Postman made a change that pushed a segment of its user base to look elsewhere: it removed the ability to create scratch pads and forced all work to sync through its cloud, requiring an account and workspace. For teams that had been using Postman offline, or that simply didn’t want their API collections living on someone else’s servers, this was a problem.

Bruno, an open-source API client that stores collections as plain files on your filesystem, arrived at roughly the same moment and gained traction fast. It currently has over 30,000 GitHub stars and a growing community. The pitch is simple: your API collections are just folders and text files, they live in your repo, and you review API changes in pull requests like any other code.

That’s a compelling story. But is it enough to justify switching? It depends heavily on how your team works.

The core difference: where your collections live

The most important distinction between the two tools isn’t features—it’s architecture.

Postman stores collections in its cloud by default. You can export them as JSON files, but the working copy lives in Postman’s workspace, and collaboration happens through Postman’s sharing model. The JSON export is also notoriously noisy: it includes IDs, timestamps, and metadata that change on every save, which makes diffs nearly unreadable.

Bruno stores each request as a .bru file in a plain folder structure. A collection looks like this:

my-api/
├── bruno.json
├── Auth/
│   └── Login.bru
└── Users/
    └── Get User.bru

Each .bru file is a small, human-readable text file using Bruno’s own DSL. Because the files are stable and readable, git diff produces something a human can actually review. When someone changes an endpoint URL or adds a header, that change shows up cleanly in a pull request.

For teams that already treat infrastructure and configuration as code, this is the entire value proposition. API collections become versioned artifacts alongside the services they test, with the same review process, the same history, and the same access controls.

Feature comparison: where Bruno stands and where it doesn’t

Bruno has closed a lot of the gap, but Postman still leads on breadth.

What Bruno does well:

  • Git-native collections with clean diffs
  • Fully offline and local-first by default—no account required
  • A decent request builder with environments, variables, and scripting (JavaScript via a sandbox)
  • Collection runner for basic automated runs
  • A CLI (bru) for CI pipelines
  • Import from Postman, OpenAPI, Insomnia, and others
  • Open source (MIT license) with a paid “Golden Edition” for advanced features

Where Postman still wins:

  • Mock servers and API documentation are built in and mature
  • Monitoring with scheduled runs and alerts
  • Team collaboration at scale, including role-based access and shared workspaces
  • The ecosystem: integrations, a public API network, and extensive learning resources
  • Governance and enterprise features like SSO and audit trails

For a solo developer or a small team testing internal APIs, Bruno covers nearly everything. For an organization that relies on Postman’s mock servers, monitoring, or public documentation hosting, switching means finding replacements for several tools at once.

Performance and day-to-day feel

Bruno is noticeably lighter. It’s built on Electron like Postman, but it launches faster and uses less memory because it isn’t loading a cloud sync layer or a large plugin ecosystem. Users coming from Postman often mention the speed as an immediate, tangible improvement.

The trade-off is polish. Postman has had years to refine its UI, and it shows in small ways—autocomplete, request history, and the overall smoothness of the experience. Bruno is good but occasionally feels like a younger product, which it is.

The collaboration question

This is where the decision gets nuanced, and it’s worth being honest about the trade-offs.

Postman’s collaboration model is centralized and easy: invite someone to a workspace, and they see everything. There’s no Git knowledge required, no merge conflicts, and no repository access to manage. For teams with non-engineers—QA analysts, product managers, technical writers—this is a real advantage.

Bruno’s model requires everyone to work through Git. That’s excellent for engineering teams already fluent in version control. It’s friction for anyone who isn’t. Merge conflicts on .bru files are possible, though rare in practice because files are small and changes tend to be localized. But if your QA team has never resolved a Git conflict, expect a learning curve.

The flip side: Git-based collaboration means your API collections inherit your existing access controls, backup strategy, and audit history. There’s no separate permission system to manage, and no third party holding your request data.

Security and data ownership

For regulated industries or security-conscious teams, Bruno’s local-first model is a meaningful advantage. Requests, credentials in environment files (if you choose to store them there—you shouldn’t commit secrets), and response data stay on your machine and in your repo. Postman, by contrast, syncs to its cloud, which means API keys and tokens can end up on a third-party service unless you’re careful with variable scoping.

That said, Postman offers enterprise controls, and its cloud sync is encrypted. The concern isn’t that Postman is insecure—it’s that some organizations simply can’t or won’t send API details to an external service. For those teams, Bruno isn’t just nicer; it’s the option that fits policy.

Should you switch?

A practical way to decide:

Switch to Bruno if:

  • Your team lives in Git and reviews changes via pull requests
  • You want API collections versioned with your code
  • You work offline or have data-residency constraints
  • You’re a small team or solo developer who doesn’t need Postman’s broader platform
  • You’re comfortable with a younger tool that’s still evolving

Stay with Postman if:

  • You depend on mock servers, monitoring, or hosted documentation
  • Your collaborators include non-engineers who won’t use Git
  • You need enterprise governance, SSO, and mature team management
  • Your workflows are deeply tied to Postman’s integrations and public API network

A middle path exists, too: many teams run both. Bruno handles day-to-day request testing and lives in the repo, while Postman remains for documentation and monitoring. It’s not elegant, but it’s common and pragmatic.

The bottom line

Bruno isn’t trying to be Postman. It’s trying to be the API client that fits a Git-centric engineering workflow, and on that goal it delivers. The collections-as-files model is genuinely better for teams that already treat configuration as code, and the local-first design solves a real problem for anyone uncomfortable with cloud-synced API data.

But “better for some workflows” isn’t the same as “better.” Postman’s platform breadth—mock servers, monitoring, documentation, enterprise controls—remains a genuine advantage that Bruno doesn’t fully replicate. If your team uses those features, switching means giving something up.

The honest answer: Bruno is worth switching to if your team’s bottleneck is collaboration-through-Git and data ownership. It’s not worth switching to just because it’s open source, or because Postman made a policy change you disliked. Evaluate the workflow you actually have, not the one you’d like to have—and pick the tool that fits it.