Postman vs Insomnia vs Bruno: Which API Client Is Best in 2025
Three tools dominate the conversation among developers who test APIs daily: Postman, Insomnia, and Bruno. Each has a distinct philosophy, and the “best” one depends heavily on how your team works. This comparison breaks down pricing, features, collaboration, and the trade-offs that actually matter in 2025.
Why the API Client Choice Matters More Than Ever
API clients have evolved from simple request senders into platforms that manage collections, environments, mock servers, automated tests, and CI/CD integrations. The tool you pick shapes your daily workflow and, increasingly, where your API definitions live and who can access them.
The stakes rose in 2023 when Postman’s cloud sync made collection data publicly accessible by default, exposing API keys in some cases. That incident, plus Insomnia’s 2023 account requirement controversy, pushed many teams to reconsider their tooling. Bruno emerged as a direct answer to those concerns, and the market now offers three genuinely different approaches.
Postman: The Full Platform
Postman started in 2012 as a Chrome extension and grew into the most widely used API platform in the industry. Its scale is its biggest strength and its most common complaint.
Strengths:
- The largest feature set: API documentation, mock servers, monitors, automated test suites, and a public API network
- Strong collaboration tools with workspaces, roles, and version history
- Extensive integrations with CI/CD pipelines via Newman and the Postman CLI
- A massive community and tutorial ecosystem
Weaknesses:
- Heavier and slower than the alternatives, especially on large collections
- Free tier limits collaboration; paid plans start at $14 per user per month (Basic) and climb quickly for teams
- Collections live in Postman’s cloud, which raises data governance questions for some organizations
- The interface has grown complex enough that new users often need onboarding
Postman works best for teams that want one platform for the entire API lifecycle and don’t mind paying for it. If your organization already standardizes on Postman, switching costs are real.
Insomnia: Polished Design, Rocky Ownership
Insomnia built its reputation on a clean interface and strong support for GraphQL and gRPC alongside REST. Kong acquired the tool in 2019, and that ownership has shaped its trajectory.
Strengths:
- One of the best-designed interfaces of the three, with fast request building
- Solid GraphQL support, including schema introspection and query autocompletion
- Plugin ecosystem for extending functionality
- Design-first workflow with OpenAPI document editing built in
Weaknesses:
- The 2023 decision to require accounts for local use angered longtime users, and Kong partially walked it back after backlash
- Free tier is now limited to a small number of collections; the Individual plan runs about $12 per month, Teams about $30 per user per month
- Development pace and roadmap clarity have drawn criticism since the acquisition
- Data sync defaults to Kong’s cloud
Insomnia suits individual developers and small teams who value interface quality and work heavily with GraphQL. The ownership situation is worth watching if long-term stability matters to you.
Bruno: The Git-Native Challenger
Bruno launched in 2023 with a simple, pointed pitch: your API collections are files, stored on your machine, versioned in Git. No cloud account required.
Strengths:
- Collections are plain-text files (a custom
.bruformat) that live in your repo - Offline-first by default; nothing leaves your machine unless you choose to sync
- Free and open source (MIT licensed), with an optional paid API for team collaboration
- Fast, lightweight desktop app
- Git-based collaboration fits naturally into existing developer workflows
Weaknesses:
- Younger project with a smaller community and fewer integrations
- The
.bruformat is proprietary to Bruno, so migrating collections in and out takes effort - Fewer built-in enterprise features like SSO and audit logging (some are on the paid tier)
- Less mature tooling for large-scale test automation
Bruno appeals to developers who treat API collections like code and want them reviewed in pull requests. For teams already deep in Git workflows, that model can eliminate an entire category of tooling friction.
Feature Comparison at a Glance
| Feature | Postman | Insomnia | Bruno |
|---|---|---|---|
| Pricing (individual) | Free tier; paid from ~$14/mo | Free tier; paid from ~$12/mo | Free; paid team tier |
| Storage model | Cloud-first | Cloud-first | Local files, Git-friendly |
| Open source | No | Partially | Yes (MIT) |
| GraphQL support | Good | Excellent | Good |
| gRPC support | Yes | Yes | Yes |
| CI/CD integration | Mature (Newman, CLI) | Moderate | Growing |
| Collaboration | Strong, built-in | Moderate | Via Git |
Pricing and feature details shift frequently, so verify current terms before committing.
How to Choose
Pick Postman if your team needs the broadest feature set, enterprise controls, and mature CI/CD tooling, and you’re comfortable with cloud-stored collections and per-seat pricing.
Pick Insomnia if interface quality and GraphQL workflows top your list, and you’re comfortable with Kong’s direction for the product.
Pick Bruno if you want your API collections versioned alongside your code, you value offline-first privacy, and you’re willing to trade some polish and ecosystem size for those principles.
A practical approach: run a two-week trial with your actual collections in two of the three tools. Migration friction and daily ergonomics reveal more than feature checklists do.
The Bottom Line
There’s no universal winner in 2025. Postman remains the default for teams that want an all-in-one platform and will pay for it. Insomnia offers the best-designed experience for GraphQL-heavy work, though its ownership history gives some developers pause. Bruno is the strongest choice for Git-centric teams that want their API definitions to live in their own repositories.
The real dividing line isn’t features—it’s where your API collections live and who controls them. Decide that first, and the right tool usually becomes obvious.