Last Friday afternoon, my colleague Chen dropped a message in our team chat: “Postman just forced another login prompt. This time it won’t even let me use offline mode.” The responses came fast. Several people chimed in with their own complaints. Someone mentioned their collection sync failed and lost data. Another person grumbled about memory usage hitting 800MB. A few others just didn’t want their API request history sitting on someone else’s servers.
This isn’t an isolated incident. Since Postman killed the Scratchpad offline mode in 2023, developer dissatisfaction has been building steadily. Check r/webdev on Reddit and you’ll find a “Postman alternatives” thread hitting the front page every few weeks. By 2026, Postman’s direction has shifted heavily toward enterprise collaboration. For individual developers and small teams, all those unused features feel more like baggage than value.
The problem is straightforward: I want to send a request, read the response, and debug an endpoint. Why do I need forced login, forced internet connection, and a bloated Electron app that keeps getting heavier?
That’s where the alternatives come in. This article covers five tools I’ve actually used and think are worth serious consideration: Insomnia, Hoppscotch, Bruno, Thunder Client, and HTTPie. Each represents a different design philosophy and fits different workflows.
The Big Picture: Core Differences Between Five Tools
Before we get into details, here’s a table showing the key dimensions so you can quickly narrow down which one might fit:
| Dimension | Insomnia | Hoppscotch | Bruno | Thunder Client | HTTPie |
|---|---|---|---|---|---|
| Open Source | Partially (MIT, plugins closed) | Fully open (MIT) | Fully open (MIT) | Closed (freemium) | CLI open, desktop closed |
| Local-First | Supports local storage | Browser-based / self-hostable | Pure local, filesystem storage | VS Code local storage | CLI inherently local |
| Git-Friendly | Moderate (JSON export) | Moderate (JSON export) | Native support (.bru plaintext) | Supported (JSON committable) | Scripts as code |
| CLI Support | inso CLI | Limited | bruno CLI | None | httpie CLI (core product) |
| Team Collaboration | Cloud sync (paid) | Self-hosted or cloud | Git is collaboration | VS Code Live Share | No built-in collaboration |
| Pricing | Free tier usable, Enterprise $12/mo | Free self-host, cloud has paid tiers | Completely free | Free limited, Pro $10/yr | CLI free, desktop $5.83/mo |
Tables only give you rough direction. Choosing a tool isn’t about specs. It’s about how it fits into your daily workflow. Let’s go through them one by one.
Insomnia: Lowest Friction for Postman Migrants
Say you decide this afternoon to leave Postman. Open Insomnia, click Import, select your Postman Collection JSON file, wait a few seconds, and everything shows up. All your requests, folder structure, and environment variables are there. The layout mirrors Postman closely: request list on the left, editor in the middle, response panel on the right. Your muscle memory transfers almost completely.
Insomnia is maintained by Kong (the company behind Kong Gateway). The product positions itself as an integrated tool for API design, debugging, and testing. A few highlights worth calling out:
Environment variable management is detailed. You can set Base Environments and Sub Environments, with variables that nest and reference each other. If you maintain four separate environments (development, testing, staging, production), this saves massive amounts of duplicate configuration work.
Request chaining is convenient. A token returned from a login endpoint can automatically inject into headers for all subsequent requests. No manual copy-paste. This is particularly smooth when debugging authenticated APIs.
GraphQL support is built-in, with schema autocompletion and a query editor. If your project has both REST and GraphQL endpoints, Insomnia covers both in one tool.
But Insomnia has history that hurt community trust. In early 2024, Kong made a change requiring users to log in before using the tool, exactly like Postman’s earlier move. The community backlash was fierce. GitHub Issues filled with angry comments. A few weeks later, Kong reversed the decision and reintroduced a fully offline Scratch Pad mode. This shows open-source community pressure works, but it’s also a reminder: commercial companies maintaining open-source tools can shift direction. A feature you rely on today might become a paid tier tomorrow.
Insomnia’s current strategy is free tier for core debugging (enough for daily use), paid tier adds cloud sync, team collaboration, and Git Sync. This division is reasonable and doesn’t feel exploitative toward free users.
Who should use it? People migrating from Postman who don’t want to spend time adapting to a completely new interface. Frontend developers who need GraphQL debugging. Teams already using Kong’s tech stack.
Hoppscotch: Open Your Browser and Get to Work
You’re at a coffee shop on the weekend using a company laptop that won’t let you install software. You suddenly need to verify the response format from a production endpoint. Open your browser, type hoppscotch.io, and start sending requests. No installation, no registration. Thirty seconds later, you have your result.
That’s Hoppscotch’s most compelling feature: zero-install, zero-config instant availability. It’s a PWA (Progressive Web App) that runs in your browser but doesn’t feel like a clunky web tool. The interface is responsive and fast. There’s no Electron shell dragging several hundred megabytes of Chromium runtime.
Feature coverage is broader than you’d expect. REST, GraphQL, WebSocket, Server-Sent Events (SSE), Socket.IO, and MQTT are all supported. For developers working on real-time communication, WebSocket and SSE debugging is particularly useful. In Postman, these are either unsupported or have poor UX.
Hoppscotch has a killer feature for privacy-conscious teams: full self-hosting. You can deploy your own instance using Docker Compose on your own servers, including backend API, database, and frontend. All data stays on your infrastructure. The community edition is completely free and open source. The enterprise edition adds SAML/OIDC single sign-on, audit logs, and team management.
For developer experience, Hoppscotch has a Collections system supporting folder organization, environment variables, and pre-request scripts. It also has built-in API documentation generation. Your defined request collections can be turned into shareable API documentation pages with one click.
The downside is browser environment limitations. Sending HTTP requests directly from a browser runs into CORS policy blocks. Hoppscotch provides a browser extension (Proxy Agent) to bypass this, but installing an extension somewhat undermines the “zero-install” experience. If your work involves heavy localhost debugging, a pure browser solution won’t be smooth enough. Fortunately, Hoppscotch also has a desktop app (built with Tauri, much lighter than Electron) that fills this gap.
Who should use it? People who switch devices frequently. Scenarios where you need quick endpoint verification without installing software. Technical leads who want to self-host an API collaboration platform for their team. Engineers doing WebSocket/SSE real-time communication development.
Bruno: Treat API Definitions Like Code
Bruno has the clearest stance among these options. Its design philosophy boils down to one sentence: API collections should be stored as local filesystem files, managed with Git, not locked in some cloud black box.
Open Bruno and create a collection. It generates a set of .bru files in your specified directory. Each file corresponds to one request, using Bruno’s custom plaintext DSL that looks like this:
“`
meta {
name: Create User
type: http
seq: 1
}
post {
url: {{baseUrl}}/api/users
body: json
}
body:json {
{
“name”: “John Doe”,
“email”: “[email protected]”
}
}
“`
Human-readable, Git diff-friendly, merge conflicts easy to resolve. Compare this to Postman’s exported Collection JSON files that easily hit thousands of lines, packed with metadata and UUIDs. Open a diff tool and you’ll just see a mess of red and green noise.
This design decision has major ripple effects:
Team collaboration becomes git push and git pull. No extra sync service needed, no team accounts to create, no permissions to manage. Whatever Git workflow your project uses, the API collections follow the same process.
Version history exists naturally. Who changed this request’s header? Git blame tells you. What did last week’s working version look like? Git log plus checkout handles it.
Code review covers API definitions. In a pull request, reviewers see not just business logic changes but also corresponding test request updates.
Bruno also has a CLI tool (bru CLI) that can run your request collections in CI/CD pipelines. Combined with assertion scripts, API requests become part of automated regression testing, not just debugging tools. In projects where APIs change frequently, this has real value. Run all endpoints automatically before every merge, and breaking changes surface immediately.
Bruno’s business model is another standout: completely free, no paid tier, no feature gating. Developer Anoop has stated explicitly in the project docs that Bruno won’t have cloud services or subscriptions. Revenue comes from an optional Golden Edition (a thank-you version for supporters with identical features) and enterprise consulting. Whether this model is sustainable long-term is debatable, but at least for now, you don’t have to worry about free features suddenly moving behind a paywall.
The downsides need to be clear: Bruno’s feature set is noticeably smaller than Postman’s. No built-in mock server, no API documentation generation, no monitoring or performance testing. Its plugin system is still in early development with limited options. If you depend heavily on these capabilities, Bruno can’t fill the gap yet. The interface design leans minimalist. Some people find it clean and efficient. Others might think it looks bare.
Who should use it? Developers who value privacy and data ownership. Heavy Git workflow users. Teams that want API definitions and code in the same repository under version control. People who dislike SaaS tools collecting their data.
Thunder Client: Stay Inside VS Code for Everything
You’re writing code in VS Code. You finish changing an endpoint’s logic and want to quickly verify the response matches expectations. Switch to Postman? Too heavy, and Alt+Tab breaks your flow. Open a terminal in the editor and type curl commands? Assembling parameters every time is tedious.
Thunder Client’s solution is simple: add a REST client panel to the VS Code sidebar. Click the icon, open the request editor, fill in URL and parameters, click Send, and the response appears directly in VS Code. The whole process stays inside the editor. No extra window, no extra process, no extra memory footprint.
This “embedded” design philosophy is appealing. It doesn’t try to become a platform or manage the full API lifecycle. It just focuses on doing one thing well: sending requests from inside your editor.
Features are all there: environment variables, request collections, folder organization, simple test scripts (using Postman-like assert syntax), cookie management, OAuth 2.0 and Bearer Token authentication. Collection data defaults to storage in the workspace’s .vscode/thunder-tests directory. Commit it to Git and share with your team.
The interface is restrained. No flashy animations, no unnecessary panels, fast loading. Compared to Postman’s multi-second startup time, Thunder Client is instant.
The free tier has limits: collection and environment caps (enough for personal daily use), and some advanced features like Collection Runner (batch execution), CI/CD export, and GraphQL variable autocompletion require Pro. Pro costs $10 per year. Compare that to Postman Team at $14 per user per month, and the cost is negligible.
The biggest limitation is obvious: it’s tied to VS Code. JetBrains IDE users can’t use it (though IntelliJ’s built-in HTTP Client is also excellent, based on .http files, equally plaintext and Git-friendly). Vim or Neovim users won’t consider it either, but they’re probably already comfortable with curl or HTTPie anyway.
Who should use it? Heavy VS Code users. Backend developers in constant “write code, test endpoint” loops. People who don’t want to install another Electron app. Situations where API tool requirements are modest and core debugging features are enough.
HTTPie: The Command Line Answer
There’s a category of developers who always have a terminal open and never touch a GUI if they can avoid it. For them, the most natural way to send an HTTP request is typing one command:
“`bash
http POST api.example.com/users name=”John Doe” [email protected]
“`
This command: sends a POST request to the target URL, automatically sets Content-Type to application/json, serializes name and email into a JSON body. Output comes with syntax highlighting, headers and body displayed separately, immediately readable.
Compare doing the same thing with curl:
“`bash
curl -X POST https://api.example.com/users
-H “Content-Type: application/json”
-d ‘{“name”:”John Doe”,”email”:”[email protected]”}’
“`
HTTPie’s advantages are immediately visible: more intuitive parameter syntax, more readable output, far fewer quotes and backslashes to type. It’s not trying to replace curl (curl’s capability range is much broader). Instead, it provides a friendlier experience for the specific scenario of “daily API debugging.”
HTTPie was born in 2012, originally a command-line tool written in Python. Over a decade of iteration has made it very mature and stable. By 2026, the team also released a desktop version (HTTPie Desktop) and web version (httpie.io/app), giving people who don’t want to live in the terminal a graphical interface option. But the core CLI remains free and open source. That’s its foundation.
In CI/CD and automation scripts, HTTPie is particularly useful. Compared to running collections with Postman’s Newman CLI, writing HTTPie commands directly in shell scripts or Makefiles is more transparent. Every step is visible. You don’t need to understand Newman’s collection format and execution mechanism.
HTTPie also has Session functionality: you can save authentication info, headers, and cookies to a named session, and subsequent requests automatically carry them. This is convenient when debugging APIs that require login state. You don’t need to pass tokens every time.
The disadvantages are clear: HTTPie is a tool for “sending requests,” not a platform for “managing APIs.” No collection concept (though Desktop added it). No graphical request orchestration. No WebSocket support. No mock server. If you need an “API workbench,” it won’t satisfy you. But if you just want “fast, elegant HTTP requests,” it might be the best choice.
Who should use it? Heavy terminal users. DevOps engineers writing automation scripts and CI/CD pipelines. Minimalists who prefer managing everything as code. Scenarios where you need quick endpoint verification without launching a GUI.
How to Choose: Three Questions to Point You in the Right Direction
After covering five tools, here are three judgment dimensions:
First, what are your data storage requirements? If your company has compliance requirements, or you personally care strongly about “my request history shouldn’t appear on someone else’s servers,” prioritize Bruno (pure local files) and Hoppscotch self-hosting. Insomnia’s Scratch Pad mode also works, but commercial companies always carry product direction change risk.
Second, how does your team collaborate? If your team has already built a complete workflow around Git, Bruno is naturally compatible. API collections follow the code. No extra tooling needed. If your team needs real-time collaboration, permission management, and audit logs, Hoppscotch Enterprise or Insomnia’s team features are better fits. If you’re an independent developer or a two or three person squad, Thunder Client or HTTPie is already enough. Don’t overcomplicate things.
Third, what environment do you work in daily? Living in VS Code all day? Thunder Client has zero onboarding cost. Working in the terminal constantly? HTTPie is your tool. Need a full-featured graphical workbench? Insomnia or Hoppscotch Desktop are hard to avoid.
Migration Doesn’t Need to Happen All at Once
If you’re still using Postman, you don’t need to do a big migration today. The practical approach: export your Postman Collection first (File, Export), then import it into two or three candidate tools and try them. Spend a week doing daily work in the new tool. Once you’ve experienced enough, make your decision.
Bruno, Hoppscotch, and Insomnia all support direct import of Postman Collection format. Migration cost is low. Thunder Client and HTTPie have different use cases. There’s no “one-click import” concept, but getting started is already fast.
You can also mix and match. Use Bruno to manage API collections in daily projects (under version control), use Thunder Client in VS Code for quick debugging requests, use HTTPie when writing deployment scripts. Tools serve you. There’s no rule saying you can only use one.
In 2026, Postman’s monopoly era is over. It’s been replaced by a batch of lighter, more respectful of user data, more focused on specific scenarios tools. For developers, more choices exist, and every choice has a clear design philosophy behind it. Not the “tries to do everything but excels at nothing” hodgepodge. Pick the one that aligns best with how you work and start using it.
Stay updated with our latest AI insights
