Karve — a native Windows alternative to Insomnia
Karve leads with Windows-native quality: a WinUI 3 app — not an Electron/React shell — that starts fast, follows your system theme with Mica, and keeps your requests as plain .http files organized into folders on disk. Insomnia is a mature cross-platform client with Git Sync, a plugin hub, and a CLI. For a team already on Windows that just wants to open a file and run it, Karve is the shorter path — bought once, no sign-in.
Why Karve
What you get
A native WinUI 3 app that feels at home on Windows — no Electron, no storage-mode decision, no sign-in. Your requests are .http files organized into folders on disk, bought once. Install from the Store, open a file, run.
What it leaves out — on purpose
No plugin hub, built-in Git Sync, CLI, or GraphQL/gRPC, and Windows-only. Karve keeps a narrow surface so there's less to learn and nothing to wire up — you version files with your normal Git workflow.
Side by side
| Dimension | Karve | Insomnia |
|---|---|---|
| Platform & engine | Native WinUI 3, no Electron | Electron + React |
| Price | $39.99 one-time, all v1.x updates | Free tier (up to 3 users for Git Sync); paid add-ons |
| Files & Git | .http files on disk, diff in Git | On-disk storage + built-in Git Sync |
| Organize requests | Virtual folders over files from any repo; files never move | Collections and first-class environments |
| Account & cloud | None — fully local, no sign-in | Local use without account; Cloud Sync & Git Sync (E2EE) |
| Protocols | REST / HTTP | HTTP, GraphQL, gRPC, WebSocket |
| Extensibility & team | None — single-user tool | Plugin Hub, Inso CLI, cloud collaboration, enterprise IdP |
Insomnia details reflect its public product and pricing pages; Karve's reflect the shipping v1.0 scope. "On the roadmap" means planned, not yet available.
Where Karve fits
"Local-first" alone doesn't separate these two — Insomnia does that well. The difference is the feel of the app on Windows. Karve is built directly on WinUI 3, so it starts quickly, follows your system light/dark theme with Mica, and behaves like a first-class desktop app rather than a web view in a wrapper.
For a team where most developers are already on Windows, that's a shorter path from install to first request: buy it once from the Store, open a .http file, and run. No plugin hunting, no storage-mode decision, no sign-in.
What Insomnia does that Karve doesn't
- Built-in Git Sync plus multiple storage modes (Local Vault, Scratch Pad, Cloud Sync).
- A plugin hub for extending the client.
- The Inso CLI for running collections in CI/CD.
- GraphQL, gRPC, and WebSocket support beyond plain REST.
- Cross-platform desktop builds for macOS and Linux, not just Windows.
Karve doesn't try to match that breadth — it trades it for a smaller, native Windows tool you own outright.
FAQ
Is Karve just another local-first client like Insomnia?
Both run offline, but Karve is a single-purpose native Windows app, while Insomnia is a broader cross-platform Electron client with Git Sync, plugins, and a CLI.
Does Karve have Git Sync and plugins?
No plugin system and no Git Sync feature — your requests are plain .http files, so you version them with your normal Git workflow. Insomnia offers a built-in plugin hub and Git Sync.
Does Karve support GraphQL?
Not in v1. Karve focuses on REST and the .http format; Insomnia supports GraphQL and gRPC.
On Karve's roadmap
Everything above is Karve's shipping v1.0 — what's in the app today. A few things are planned for upcoming v1.x updates, included in the one-time price and not yet available:
See the full roadmap for what's coming and what's deliberately out of scope.
More comparisons
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