Best API Testing Tools for Solo Developers in 2026: Postman vs Bruno vs Hoppscotch vs Insomnia

Originally published at devtoolpicks.com

Postman cut its free plan to a single user in March 2026. No more inviting teammates to a free workspace. No more sharing collections without paying. If you need collaboration with even one other person, you are looking at $19/user/month on the Team plan.

For solo developers, the free plan still works. But it is limited: 25 collection runs per month, 1,000 mock server requests, and a single private API. If you test APIs more than a few times a day, you will hit those caps within a week.

The good news is that three open source alternatives have matured to the point where switching from Postman is not just possible, it is often better. Bruno stores everything as files in your Git repo. Hoppscotch runs in your browser with zero install. Insomnia offers enterprise features backed by Kong.

Here is what each tool actually costs, what it does well, and where it falls short.

Quick verdict

Bruno

Bruno stores your API collections as plain text .bru files on your filesystem. No cloud sync. No account required. No telemetry. Everything lives in your project directory alongside your code, and you version it with Git like everything else.

Pricing:

• Free: Open source (MIT license), unlimited everything
• Pro: $6/user/month, adds team collaboration and advanced protocol support
• Ultimate: $11/user/month

The free version has no limits. You get every feature that matters for solo development: REST, GraphQL, HTTP requests, environment variables, scripting, and collection management. There is no cap on collections, requests, or runs. The Pro and Ultimate tiers exist for teams that need shared workspaces and additional protocols. As a solo developer, you will likely never need to pay.

Bruno has 30,000+ stars on GitHub and a growing community. If you have already looked at open source alternatives to GitHub for hosting your code, Bruno fits the same philosophy: your tools should be yours, not locked in someone else's cloud.

The Git-native approach is the real differentiator. When you add a new API endpoint to your collection, that change shows up in your git diff alongside the code that implements it. Your API tests and your application code live in the same commit, the same PR, the same review process. This is how developers naturally want to work, and it is something Postman's cloud-first model never supported well.

Bruno is a desktop app (Electron-based) available on macOS, Windows, and Linux. There is no web version. If you want to test an API quickly from a browser without installing anything, Hoppscotch is the better choice.

Who should NOT use Bruno: Developers who need a web-based tool or real-time collaboration with teammates. Bruno is built for solo and small-team workflows where Git is the collaboration layer. If you need shared workspaces with live editing, look at Hoppscotch or Insomnia.

Hoppscotch

Hoppscotch (formerly Postwoman) is a browser-based API client. Open the website, start testing. No download, no account, no setup. It is the fastest way to make an API request in 2026.

Pricing:

• Free: Open source (MIT license), browser-based, self-hostable
• Teams: $6/user/month for organization features
• Enterprise: Custom pricing with SSO and advanced admin controls

Hoppscotch supports REST, GraphQL, WebSocket, SSE, Socket.IO, and MQTT. That protocol coverage is broader than Bruno or Insomnia. If you work with real-time protocols beyond basic HTTP, Hoppscotch handles them natively.

The browser-based design means you can test an API from any machine without installing anything. This is useful when you are on a shared computer, testing from a server, or just do not want another Electron app consuming RAM. Hoppscotch also works as a PWA, so you can install it locally for offline use.

With 68,000+ GitHub stars, Hoppscotch is the most popular open source API client by star count. The community is active and the tool receives regular updates.

You can import collections from Postman, Insomnia, OpenAPI, and HAR files. Real-time collaboration is available on the Teams plan, and you can self-host the entire platform on your own infrastructure for complete data control.

The trade-off is depth. Hoppscotch is excellent for sending requests and inspecting responses. It is less capable when you need complex test scripts, chained requests, or advanced environment management. For those workflows, Bruno or Insomnia gives you more control.

Who should NOT use Hoppscotch: Developers who need advanced scripting, pre-request scripts, or complex test chains. Hoppscotch is built for speed and simplicity. If your API testing involves multi-step workflows with conditional logic, Bruno or Insomnia are better equipped.

Insomnia

Insomnia is backed by Kong and positions itself as the enterprise-ready open source alternative. It supports REST, GraphQL, and gRPC, with cloud sync, team collaboration, and security features that the other open source tools do not match.

Pricing:

• Free: Unlimited private projects, core features, local storage
• Individual: $8/month
• Team: $14/user/month with collaboration features
• Enterprise: Custom pricing with SSO (SAML, OIDC), RBAC, dedicated support

The free tier is usable for solo developers. You get unlimited private projects with local storage and all core API testing features. The paid tiers add cloud sync, team workspaces, and enterprise security.

Insomnia has a complicated history. Version 8.0 introduced a mandatory cloud account requirement that forced all data through Kong's servers. The developer community pushed back hard. Kong reversed the decision, and the current version supports both local-only and cloud storage on a per-project basis. The tool is genuinely good now, but some developers remain wary because of that track record.

For teams that need SSO, role-based access control, and dedicated support, Insomnia is the strongest open source option. None of the other tools in this list offer enterprise security features at this level.

Insomnia also has the best gRPC support of the four tools. If your APIs use gRPC (common in microservices architectures), Insomnia handles it natively. Bruno added gRPC support more recently, and Hoppscotch does not support it.

The app is Electron-based and can feel heavier than Bruno or Hoppscotch. Memory usage is higher, and startup time is noticeably slower on older machines.

Who should NOT use Insomnia: Developers who prioritize privacy and want zero cloud dependency. Despite Kong's reversal on mandatory accounts, the cloud-first architecture means some features still require an account. If "data never leaves my machine" is a hard requirement, Bruno is the safer choice.

Postman (the incumbent)

Postman is still the most widely used API platform. 30+ million developers, thousands of integrations, and the largest community and documentation library in the category. If you learned API testing, you probably learned it in Postman.

Pricing (March 2026 plans):

• Free: 1 user only, 25 collection runs/month, 1,000 mock server requests, 1 private API
• Solo: $9/user/month, higher AI credits, automation features
• Team: $19/user/month, full collaboration, governance
• Enterprise: $49/user/month, SSO, RBAC, compliance

The March 2026 pricing overhaul is what pushed many developers to look at alternatives. The free plan went from supporting 3 users to just 1. Collection runs, which used to be capped, are now unlimited on paid plans. Mock servers are also unlimited on paid plans. These are welcome changes for paid users, but the free tier is significantly less useful than before.

Postman's strengths are its ecosystem (Jira, Slack, GitHub integrations), its AI features (Postbot for generating tests), and its API documentation tools. If you already use Postman's monitors, mock servers, and team workspaces extensively, switching has a real cost.

The platform is also cloud-first by default. Your collections sync to Postman's servers unless you explicitly opt out. For developers working with sensitive API credentials or proprietary endpoints, that is a concern. Postman offers local storage via the Scratch Pad, but it lacks many collaboration features.

Who should NOT use Postman: Solo developers on a budget who just need to send API requests and inspect responses. The free plan's limits and the cloud-first architecture are both downsides when free, offline alternatives exist. If you are starting fresh with no existing Postman collections, Bruno or Hoppscotch gives you more for less.

How to choose

You want Git-native, offline, and private: Bruno. Collections live in your repo. No cloud, no account, no telemetry. The free tier has zero limits. If you are a solo developer who uses Git (which is everyone), Bruno is the natural fit.

You want to test an API right now without installing anything: Hoppscotch. Open the website, make a request. Supports more protocols than any other tool in this list. Perfect for quick debugging sessions.

You need enterprise security for your team: Insomnia. SSO, RBAC, and dedicated support backed by Kong. The best option for organizations that need compliance and governance alongside their API testing.

You are deep in the Postman ecosystem: Stay on Postman. If your team uses Postman monitors, mock servers, and integrations extensively, the switching cost is real. But if you are only using it to send requests, you are overpaying for features you ignore.

The path for most indie hackers: Install Bruno. Import your Postman collections. Test your APIs alongside your code. You will never think about API client pricing again.

FAQ

Can I import my Postman collections into these tools?

Yes. All three alternatives support Postman collection imports. Bruno and Hoppscotch both handle Postman v2.1 collections. Insomnia supports Postman, OpenAPI, HAR, and curl imports. The migration is straightforward. Export from Postman as JSON, import into your new tool.

Is Bruno really free with no catch?

Yes. Bruno is MIT-licensed open source software. The free version has no feature limits, no usage caps, and no account requirement. The Pro ($6/month) and Ultimate ($11/month) tiers add team collaboration features. Solo developers do not need them.

Which tool has the best GraphQL support?

Insomnia and Hoppscotch both have strong GraphQL support with schema introspection, syntax highlighting, and auto-complete. Bruno supports GraphQL but with a simpler interface. For heavy GraphQL development, Insomnia has a slight edge.

Do any of these tools support gRPC?

Insomnia has the most mature gRPC support. Bruno added gRPC in a recent update. Hoppscotch does not support gRPC natively. If gRPC is a core part of your stack, Insomnia is the best choice.

Should I care about my API collections being stored in the cloud?

If you test against production APIs with real credentials, yes. Postman syncs collections to its cloud by default. A security breach on Postman's side could expose your API keys, tokens, and endpoint structures. Bruno stores everything locally, which eliminates that risk entirely. Hoppscotch can be self-hosted for the same reason.

Bottom line

Postman's March 2026 changes made the decision easier, not harder. The free plan is now too limited for serious use, and the paid plans are more expensive than the alternatives.

Bruno is the best API client for solo developers in 2026. It is free, offline, Git-native, and has no usage limits. If you do nothing else after reading this, install Bruno and import your Postman collections. It takes 5 minutes and you will wonder why you did not switch sooner.

Hoppscotch is the fastest option when you just need to make a request. Insomnia is the right pick for teams that need enterprise features. And Postman is still fine if you are already paying and using the ecosystem heavily.

But if you are starting fresh? Bruno. No contest.

Building your indie hacker tool stack? Also read: Best Uptime Monitoring Tools for Indie Hackers and Zapier vs Make vs n8n for Solo Developers.