Postman alternative
A free Postman alternative
for every protocol.
Voyager gives you the request-building, testing and collaboration you use Postman for — free, local-first, and across 14 protocols. Here’s an honest look at where each tool is ahead.
Why developers switch
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Free collaboration
Share workspaces and collections with roles and teams, with no per-seat pricing.
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Beyond HTTP
MQTT, SMTP, raw TCP and UDP, FTP/SFTP and PostgreSQL in the same client as your REST calls.
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Local-first
Start without an account. Your data stays on your device unless you choose to sync.
Voyager vs Postman, honestly
Including where Postman is ahead. Postman details were last reviewed in October 2026 — both products change, so verify anything decision-critical.
| Category | Voyager | Postman |
|---|---|---|
| Protocols | Voyager edge 14: REST, GraphQL, SOAP, WebSocket, Socket.IO, SSE, MQTT, FTP, SFTP, SMTP, TCP, UDP, gRPC and PostgreSQL. All 14 in VS Code; 12 on the web. | HTTP, GraphQL, gRPC, WebSocket, Socket.IO and MQTT, among others — check Postman’s docs for the current list. |
| Price | Voyager edge Free. No paid tier, no feature gating, no seat limits. | A free plan plus paid per-seat plans. As of its March 2026 plan update, Postman’s free plan is scoped to a single user, with team collaboration on paid plans. |
| Team collaboration | Voyager edge Free sharing of workspaces, collections, folders, requests and environments with Admin/Editor/Viewer roles, plus teams, activity and notifications. | Mature shared workspaces with role-based access on paid plans. |
| Data storage | Voyager edge Local-first: stored in your browser or on your machine. Cloud sync only if you sign in. | Collections sync to Postman’s cloud in the standard workflow — check Postman’s docs for local-only options. |
| Collection runner, monitors & CI | Not yet — tests run per request today. Scheduled runs, monitors and a CLI runner are on the roadmap. | Postman edge Collection Runner, monitors and a CLI for CI pipelines. |
| Scripting & tests | Pre-request scripts and tests in a sandboxed QuickJS runtime, with a deliberately small API (request, response, variables, console, test). | Postman edge Pre-request and test scripts with the extensive pm.* API. Scripts that rely on pm.* need adapting for Voyager. |
| Environments & variables | Unlimited environments with {{variable}} resolution and secret values. Collection- and global-scope variables are still being wired up. | Environments plus global and collection variables. |
| Authentication | Bearer, Basic, API key and OAuth 2.0 client credentials. “Inherit from parent” doesn’t resolve yet — set auth per request. | Postman edge A broader set of auth helpers, including more OAuth flows and signature schemes. |
| Mock servers | Local mock servers with templates and delays, in VS Code (desktop soon). | Cloud-hosted mock servers. |
| API documentation | One-click, self-contained HTML docs from any collection. | Published, hosted documentation. |
| Where it runs | Web app and a VS Code extension today. Native desktop app coming soon. | Postman edge A mature desktop app, a web app and a VS Code extension. |
| Import | Postman collections and environments, Insomnia, Thunder Client, OpenAPI/Swagger and cURL. | Postman’s own formats, OpenAPI, cURL and more. |
Sources: Postman pricing · Postman docs . Voyager is not affiliated with, endorsed by, or sponsored by Postman, Inc.. Postman is a trademark of its owner.
Moving over
Export your Postman collections — and environments, as separate files — and import them into Voyager. Folders, requests, headers, bodies and variables come across; anything Voyager can’t represent is listed as a warning. Scripts written against pm.* will need small changes for Voyager’s script API.
Common questions
Is Voyager affiliated with Postman?
No. Voyager is an independent product, not affiliated with, endorsed by, or sponsored by Postman, Inc.
Can I import my Postman collections?
Yes. Voyager imports Postman collection exports and Postman environment exports.
Is Voyager really free for teams?
Yes. Sharing, roles, teams, activity and notifications are free, with no seat limits. You need a free account to collaborate.
Is Voyager open source?
No. Voyager is currently proprietary, and free to use.
Try Voyager next to Postman.
Free, no signup — import a collection and compare on your own API.