Thunder Client alternative
A Thunder Client alternative
with every protocol free.
Voyager lives in VS Code too — and keeps WebSocket, SSE, gRPC and team collaboration free. Here’s how the two VS Code API clients compare.
Why developers switch
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Streaming for free
WebSocket, SSE, Socket.IO, MQTT and gRPC without a paid plan.
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Share with your team
Roles, teams and activity without a team subscription.
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Not just VS Code
Open the same workspace in your browser, with a desktop app coming soon.
Voyager vs Thunder Client, honestly
Including where Thunder Client is ahead. Thunder Client details were last reviewed in October 2026 — both products change, so verify anything decision-critical.
| Category | Voyager | Thunder Client |
|---|---|---|
| WebSocket, SSE & gRPC | Voyager edge Free — WebSocket and SSE on every platform, gRPC in VS Code. | Listed on paid plans (Starter and above). |
| Other protocols | Voyager edge GraphQL, SOAP, Socket.IO, MQTT, FTP, SFTP, SMTP, TCP, UDP and PostgreSQL too — 14 in total. | Focused on HTTP and GraphQL — check Thunder Client’s docs for the current list. |
| Team collaboration | Voyager edge Free sharing with Admin/Editor/Viewer roles, teams, activity and notifications. | Team features are on paid plans. |
| Outside VS Code | Voyager edge Also a web app, with a native desktop app coming soon — all syncing the same workspace. | VS Code on the free plan; other editors on paid plans. |
| Collection runs & CI | Not yet — tests run per request today. A CLI runner and GitHub Actions support are on the roadmap. | Thunder Client edge Collection runs with a monthly allowance, and CLI/CI on paid plans. |
| Git sync | Not available — Voyager syncs through a free account instead. | Thunder Client edge Git Sync on paid plans. |
| Mock servers | Local mock servers inside VS Code. | Check Thunder Client’s docs for current mocking support. |
| Price | Voyager edge Free. No paid tier. | Free plan, with paid plans per user. |
| Import | Imports Thunder Client collections and environments, plus Postman, Insomnia, OpenAPI and cURL. | Imports Postman, OpenAPI, cURL and more. |
Sources: Thunder Client pricing . Voyager is not affiliated with, endorsed by, or sponsored by Thunder Client. Thunder Client is a trademark of its owner.
Moving over
Export your Thunder Client collections and environments and import them into Voyager — in VS Code or in the browser. Folders, requests and environments come across, and anything that can’t be represented is listed as a warning.
Common questions
Is Voyager affiliated with Thunder Client?
No. Voyager is an independent product, not affiliated with, endorsed by, or sponsored by Thunder Client.
Can I import my Thunder Client collections?
Yes. Voyager imports Thunder Client collection and environment exports.
Where do I get Voyager for VS Code?
Voyager API Client is free on the Visual Studio Code Marketplace.
Try Voyager next to Thunder Client.
Free, no signup — import a collection and compare on your own API.