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Dev Tools

Postman vs Insomnia vs Bruno: Best API Tool Reviewed

Postman vs Insomnia vs Bruno: Best API Tool Reviewed

If you build or test APIs for a living, your client tool is the app you stare at all day. For years that meant Postman. But the market has split into three clear camps: the all-in-one platform (Postman), the design-focused middle ground (Insomnia), and the git-native minimalist (Bruno). Each made a different bet about where your data should live and how much you should pay. Here's how they actually compare.

The quick verdict

  • Postman is the most feature-complete platform, and priced like one. Best for large teams that want mock servers, monitors, governance, and collaboration in one place.
  • Insomnia sits in the middle: lighter than Postman, strong on API design, backed by Kong's gateway ecosystem — but it now pushes you toward an account.
  • Bruno is the lean, offline-first, open-source pick. Best for developers who want their API collections to live in git alongside their code.

Pricing: where the three diverge hardest

Pricing is the fastest way to understand each tool's philosophy.

Postman runs a four-tier model — Free, Basic, Professional, and Enterprise. The Basic plan is listed around $14 per user per month billed annually (roughly $19 monthly), and Professional offers a 26% annual discount at $29 per user per month versus $39 monthly. Enterprise sits at roughly $49 per user per month on an annual-only contract, and gates the compliance features — SSO, SCIM provisioning, audit logs, and advanced role-based access control.

The catch is the free tier. Postman's Free plan has long supported up to three users with a hard cap of 25 collection runs per month. That's changing: on March 1, 2026 Postman is limiting the Free plan to a single user, so teams with two or more people must move to a paid plan. If your reason for using Postman was free small-team collaboration, that reason is going away.

Insomnia, owned by Kong, is cheaper at the entry level. At the launch of Insomnia 8.0, Kong's premium plans ranged from $5 a month for Individual users up to $45 for Enterprise users. The mid-tier Pro plan lands in between — around $12 per user per month with an annual discount, adding unlimited Git Sync users, RBAC, and 10,000 mock server requests per month. There's a free tier too, but with a meaningful string attached (more on that below).

Bruno flips the model entirely. Bruno's core API client is free and open source, with no subscription fees for core features. The project is MIT-licensed. It historically sold a one-time "Golden Edition" license, and today layers optional paid tiers on top — a free open-source edition, a Pro tier around $6 per user per month billed annually, and an Ultimate tier around $11 per user per month annually. Those paid tiers add deeper git integration, automation, and enterprise support rather than unlocking basic functionality.

Where your data lives — the real dividing line

This is the decision that matters more than any feature checklist.

Postman is a cloud-first platform. Your collections sync to Postman's servers by default, which is what powers its real-time collaboration but also what security-conscious teams worry about, since collections often contain tokens and credentials.

Insomnia took a controversial turn here. Starting with the 8.0 beta client, collections were removed unless you log in, meaning no collections in Insomnia without creating an account. There's an escape hatch: you can use Insomnia without signing in by clicking the "use local scratchpad" option on the login screen, which lets you work with a single scratchpad collection. But the Git Sync feature, where you control where collections are stored, is only available on a paid plan. The change drew heavy backlash from developers who had moved to Insomnia precisely to escape Postman's cloud model.

Bruno's entire reason for existing is the opposite stance. Bruno is offline-only, with no plans to ever add cloud sync, keeping your data on your device. Instead of a proprietary cloud, it stores everything as plain-text files in your repository. Those collections are files you can open in any text editor, diff in pull requests, and review in code review tools — so your API tests move through the same branch-and-PR workflow as your source code. If you're already organizing code in a shared repo, it's worth understanding how a monorepo structures shared tooling. The tradeoff is honest: if you want real-time collaborative workspaces where teammates see each other's changes live, Bruno's git-first model requires actual git workflows — branches, PRs, and merges.

Features and protocol support

For raw breadth, Postman leads. Even its Free plan includes access to all core API protocols — REST, GraphQL, gRPC, WebSocket, and SOAP. On top of that it stacks mock servers, monitors, automated collection runs, low-code Flows, and an AI assistant. If you need one tool that does design, testing, documentation, and monitoring, Postman covers the most surface area — though many of its most useful automation and governance limits are metered and climb with your plan. Teams wiring these tests into their pipelines should also look at the best CI/CD tools for small teams.

Insomnia's strength is API design and a cleaner, faster interface. Insomnia 8.0 evolved its "Teams" concept into "Organizations" with support for unlimited organizations, and introduced Enterprise SSO and RBAC through a new web platform. It also added AI-assisted features and leans on Kong's gateway ecosystem, which is a genuine advantage if you're already deploying APIs through Kong.

Bruno keeps the feature set deliberately focused: requests, environments, folders, scripting, and assertions — the core of API testing without the platform sprawl. What it lacks in built-in mock servers and cloud monitoring, it makes up for in speed, simplicity, and the fact that nothing leaves your machine.

Which one should you pick?

Choose Postman if you're a mid-size or large team that wants a single platform for the full API lifecycle and can absorb the per-seat cost. Just plan around the 2026 free-tier change — it's no longer a viable free option for collaborating teams.

Choose Insomnia if you want something lighter than Postman with strong design tooling and you're comfortable creating an account. It's the natural fit for teams already invested in Kong. If a mandatory login is a dealbreaker, the local scratchpad is a limited consolation.

Choose Bruno if you value privacy, speed, and git-based workflows, or if you simply want a capable client that's free and open source with no cloud dependency. It's the tool developers keep switching to after getting frustrated with account requirements elsewhere — and for solo devs and engineering teams that live in git, it's arguably the best default in 2025.

The honest summary: Postman is the most powerful, Bruno is the most principled, and Insomnia is caught trying to be both. Pick based on where you want your credentials to live and how much you want to pay per seat — those two questions decide it faster than any feature list. For more head-to-head breakdowns, browse our Dev Tools coverage.