Karve — a native Windows alternative to Postman
Karve is a fast, native Windows workspace for your .http requests: gather them from across your repos, organize them into folders, and run any of them — from files that live on your disk, with no account and no subscription. Postman wraps a full cloud platform — accounts, seats, sync — around that simple loop. Karve gives you the loop, natively, with a one-time purchase: environments, persistent history, and a fast response viewer, with nothing else to log into or manage.
Why Karve
What you get
A native Windows app that opens fast, signs you into nothing, and keeps every request as a plain .http file in your repo — organized into folders, diffed in Git, paid for once. No Electron, no seats, no cloud plan to manage.
What it leaves out — on purpose
Karve is single-user and local by design: no cloud workspaces, mock servers, GraphQL/gRPC, or CLI. That focus is the point — a smaller, faster tool you actually own, instead of a platform you log into.
Side by side
| Dimension | Karve | Postman |
|---|---|---|
| Platform & engine | Native WinUI 3, no Electron | Electron desktop + web; can feel heavy on large collections |
| Price | One-time Microsoft Store purchase — see current pricing | Free tier; Solo ~$9/mo billed annually (~$108/year, every year); Team & Enterprise cost more |
| Files & Git | .http files on disk, diff in Git | Proprietary JSON collections; Git via export/integration |
| Organize requests | Virtual folders over files from any repo; files never move | Cloud-synced collections inside workspaces |
| Account & cloud | No Karve account or cloud workspace; files and history stay local | Account-centric; much functionality is cloud-tied |
| Environments | Per-file .env environments with an active switcher | Environments & variables, cloud-synced |
| History | Persistent, searchable — full request + response, saved locally across sessions | History tied to your account/workspace |
| Protocols | REST / HTTP | HTTP, GraphQL, gRPC |
| Team & automation | None — single-user tool | Workspaces, CLI, mocks, monitors, governance |
Postman details reflect its public product and pricing pages; Karve's reflect the shipping v1.0.5 scope.
Where Karve fits
If your daily loop is "open a request, send it, read what came back," a full platform is a lot of surface area to carry. Karve trims it down to a native Windows app that opens fast, signs you into nothing, and keeps every request as plain text next to your code. Change a base URL in one place and every request in the file follows.
It also sidesteps two recurring Postman frustrations for solo and small-team users: the weight of an Electron app under large collections, and the steady pull toward accounts, cloud sync, and per-seat plans. Karve uses a one-time purchase instead: one purchase, your local files, no recurring plan.
If keeping the workflow off a vendor cloud is the priority, read how Karve works as an offline API client. .NET teams can also see the repository-first workflow in Karve for .NET developers.
Move a Postman collection to readable .http files
Karve does not import a Postman workspace. Export a Collection v2.0 or v2.1 JSON file and use the free Postman to .http converter in your browser. It converts representable requests and reports scripts, tests, external variables, file-backed bodies, or auth modes that need manual work.
Review the result with the .http validator, compare it with the request recipes, then save the file beside your code and open it in Karve. The complete checklist is in the migration guide.
Why developers switch to Karve
- Native WinUI 3 speed — opens instantly, with none of the Electron weight Postman carries on large collections.
- A one-time purchase — no seats, annual renewal, or plan to manage.
- Your requests stay plain .http files in your repo, diffed in Git — nothing locked behind a cloud account.
- No sign-in and no forced cloud sync — request files and history stay on your machine.
- Environments and persistent, searchable history are built in the moment you install.
A fast, native Windows workspace for the requests you run every day — not a platform you log into.
FAQ
Is Karve a Postman replacement?
For the everyday REST work most developers do on Windows, yes — a fast native app with no account, a one-time price, and your requests as plain .http files you own. It stays focused on that local, single-user workflow instead of a cloud platform.
Can I import my Postman collections?
Karve does not import collections directly. Export Collection v2.0 or v2.1 JSON, use the free browser converter, review its warnings, and open the saved .http file in Karve.
Does Karve need an account or subscription?
No. It's a one-time Microsoft Store purchase with no account and no subscription.
Does Karve support GraphQL or gRPC?
Karve is built for REST and the .http format — that focus is what keeps it fast and simple. GraphQL and gRPC aren't part of it, and most everyday REST work never needs them.
On Karve's roadmap
Everything above ships in Karve v1.0.5 today — including environments and persistent, searchable history. A few more things are planned for upcoming v1.x updates, included in the one-time price and on the way:
See the full roadmap for what's coming and what's deliberately out of scope.
More alternatives
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