API testing tools have split into two philosophies: cloud-account-based tools like Postman and Insomnia that sync collections to the cloud by default, and offline-first tools like Bruno that store everything as plain files on disk. The right pick depends less on features and more on where you want your API collections to actually live.
At a Glance
| Postman | Insomnia | Bruno | |
|---|---|---|---|
| Storage model | Cloud-account based (local mode available) | Cloud-account based (local mode available) | Offline-first, plain-text files on disk |
| Free tier | 1 user, 10,000 API calls/mo | Unlimited projects, Git Sync for up to 3 users | Free and open-source, no imposed usage caps |
| Entry paid tier | Solo: $9/user/mo (annual) | Pro: $12/user/mo (annual) | Paid “Golden”/”Ultimate” editions for extra features |
| Collaboration model | Cloud team workspaces | Cloud team workspaces | Via Git, since collections are plain files |
Short Verdict
Postman remains the most feature-complete choice for teams that want mature scripting, monitoring, and a large collaborative workspace, and it’s the closest thing to an industry default. Insomnia (now owned by Kong) is a strong, slightly leaner alternative with a generous free tier. Bruno is the one to pick if you specifically want your API collections stored as plain, git-diffable files with no account or cloud dependency at all — a deliberate, stated design choice by its maintainers rather than a missing feature.
Pricing Breakdown
Postman: Free tier includes 1 user, 10,000 Postman API calls per month, up to 5 integrations, 25 Automation Flow credits per month, 1,000 API monitoring requests per month per team, public workspaces, the Collection Runner, and native Git support, but no private workspaces or webhooks. Solo is $9/user/mo billed annually; Team is $19/user/mo billed annually; Enterprise is by custom quote.
Insomnia: The free “Essentials” tier offers unlimited cloud or local projects for all users, Git Sync for up to 3 users, the Inso CLI for CI/CD, unlimited collection runs and environments, 1,000 mock-server requests per month, end-to-end encryption, custom linting, and plugin access. Pro is $12/user/mo, with roughly 15-17% savings for annual billing over monthly. Enterprise is $45/user/mo self-serve for up to 50 users, with larger teams requiring a custom quote.
Bruno: The core app is open-source (MIT-licensed) and free with no imposed usage caps. Paid “Golden Edition” and “Ultimate Edition” license keys exist for additional features, though Bruno doesn’t prominently publish exact pricing for these the way Postman and Insomnia do their tiers — check usebruno.com directly if you need those extras.
The Real Differentiator: Where Your Collections Live
Postman and Insomnia are both primarily cloud-account products: your collections sync to their servers by default, with local/offline modes available as an option. Bruno inverts that: collections are stored as plain-text files (its own “Bru” markup) directly on your filesystem, with no account or login system at all. Bruno’s maintainers have explicitly stated they have no plans to ever add cloud sync, framing it as a privacy stance rather than a temporary limitation. Because Bruno’s collections are just files, teams collaborate on them through Git the same way they would with source code, rather than through a built-in cloud workspace.
Scripting and Testing
Postman has the most mature scripting support of the three, with pre-request and test scripts, a Collection Runner, and scheduled monitors. Insomnia supports unlimited collection runs and environments on even its free tier, plus a plugin system. Bruno supports JavaScript-based scripting as well, though its plugin ecosystem is smaller, reflecting its younger age and leaner team.
Pros and Cons
- Postman pros: most mature feature set, huge user base, strong monitoring. Cons: free tier is the most limited of the three (1 user, 10,000 calls/mo); cloud-first by default.
- Insomnia pros: generous free tier, Git Sync built in, CLI for CI/CD. Cons: mock-server requests capped at 1,000/mo even on Essentials; smaller plugin ecosystem than Postman’s.
- Bruno pros: fully offline, git-diffable, no account required, genuinely free core. Cons: no built-in cloud collaboration; smaller ecosystem and community than the other two.
Who It’s a Good Fit For
Postman fits teams that want a mature, all-in-one API platform and don’t mind paying per seat as they scale. Insomnia fits teams that want a similar cloud-workspace experience with a more generous free tier and native CI/CD tooling. Bruno fits developers and teams who specifically want API collections to live in their own git repository alongside their code, with no vendor account in the loop.
Bottom Line
There’s no universally “best” tool here — Postman wins on maturity and ecosystem, Insomnia wins on free-tier generosity, and Bruno wins on privacy and git-native workflows. Teams that already store infrastructure-as-code or configuration in git will likely find Bruno’s model the most natural fit; everyone else will probably be happiest with Postman or Insomnia’s cloud workspace.
FAQ
Is Bruno really free?
The core desktop app is free and open-source (MIT-licensed) with no usage caps. Optional paid “Golden” and “Ultimate” editions exist for extra features.
Can Postman and Insomnia be used fully offline?
Yes, both support local/offline modes, but their default and most-marketed workflow is cloud-account based, unlike Bruno which is offline by default.
Who owns Insomnia?
Insomnia is developed by Kong, the API gateway company, which also maintains Kong Gateway and other API infrastructure tooling.
Sources
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