Best Self-Hosted Postman Alternatives in 2026
Postman is an API development platform for designing, testing, documenting, and monitoring APIs with collaboration features. Free tier available; paid plans start at $19/user/mo.
13 Self-Hosted Alternatives to Postman
Hoppscotch Community Edition
78KOpen-source API development ecosystem — lightweight, fast alternative to Postman with REST, GraphQL, WebSocket, and real-time API testing.
Bruno
42KGit-native, offline-first API client that stores collections as plain text files. Free MIT alternative to Postman with no accounts, no cloud sync, no per-seat billing.
Insomnia
38KLeading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets.
Yaak
18KYaak is a fast, secure, and offline API client with an agent-friendly CLI
Scalar
14KScalar is a self-hosted documents & knowledge base tool with support for rest API, API client, openapi.
Karate
8.8KKarate is a Java-based application that combines API, UI, performance testing.
Mockoon
8.1KMockoon is a self-hosted automation & workflow tool that provides create, run, and share mock REST APIs without coding. Boost productivity.
Requestly
6.6KRequestly lets you run powerful browser extension and desktop app for developers to manipulate network requests entirely on your own server.
HTTPie
3.9KHTTPie is a self-hosted ides & code editors replacement for Postman and Testfully.
Firecamp
2.6KReleased under AGPL-3.0, Firecamp provides all-in-one platform for API testing on self-hosted infrastructure.
Milkman
1.3KReleased under MIT, Milkman provides craft and organize requests for any technology on self-hosted infrastructure.
Voiden
675Voiden handles offline-first API workspace as a self-hosted solution.
Gravitee
396Gravitee handles full-lifecycle API management platform as a self-hosted solution.
Why Look for Postman Alternatives?
Postman is an API development platform for designing, testing, documenting, and monitoring APIs with collaboration features. Free tier available; paid plans start at $19/user/mo.
Pricing
Here’s what Postman charges for its plans:
Free --- Free
- API client & core tools
- Unlimited specs & mock servers
- Native Git
- Unlimited
- Unlimited manual Flows
- Everything in Free, and:
Comparison Table --- Free
Self-hosted alternatives eliminate these recurring costs entirely. You pay only for your own infrastructure.
13 Best Open-Source Alternatives to Postman
Bruno
A modern, user-friendly API client that simplifies API testing and development with a clean interface and powerful features. — 41,823 GitHub stars. Licensed under MIT.
Insomnia
Intuitive, multi-protocol API client for developers. — 38,070 GitHub stars. Licensed under Apache-2.0.
Yaak
A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers. — 18,131 GitHub stars. Licensed under MIT.
Scalar
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support. — 14,284 GitHub stars. Licensed under MIT.
Mockoon
Create, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features. — 8,127 GitHub stars. Licensed under MIT.
Requestly
Developer tool for building, testing, and debuging web apps — 6,516 GitHub stars. Licensed under Custom.
HTTPie
Intuitive, user-friendly CLI tool for making HTTP requests, debugging APIs, and testing web services with ease and efficiency. — 3,876 GitHub stars. Licensed under BSD-3-Clause.
Firecamp
All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle. — 2,583 GitHub stars. Licensed under AGPL-3.0.
Voiden
Offline-first API workspace that unifies specs, docs, tests, and mocks in programmable Markdown blocks. Version control everything in plain text files. — 656 GitHub stars. Licensed under Apache-2.0.
Gravitee
Full-lifecycle API management platform that unifies synchronous and asynchronous ecosystems. Manage APIs, event streams, and AI agents with enterprise security and 4x faster gateway performance. — 393 GitHub stars. Licensed under Apache-2.0.
Hoppscotch Community Edition
An open-source alternative for API development. — 78,470 GitHub stars. Licensed under MIT.
Read full Hoppscotch Community Edition review
Karate
Combines API, UI, performance testing. — 8,802 GitHub stars. Licensed under MIT.
Milkman
Craft and organize requests for any technology. — 1,328 GitHub stars. Licensed under MIT.
Why Self-Host Instead of Postman?
- Data ownership. Your data stays on your server, not on Postman’s infrastructure.
- Predictable costs. Pay a fixed VPS cost instead of growing per-user or per-usage fees.
- No vendor lock-in. Export and migrate your data anytime. You control the database.
- GDPR and compliance. Hosting your own tools simplifies data residency and compliance requirements.
How much can you save?
Postman (Basic)
$190/mo
10 users x $19.00/user
$2,280/year
Hoppscotch Community Edition (self-hosted)
$10/mo
VPS hosting only. $0 per-user fees.
$320 year 1 (incl. $200 setup)
Your annual savings
$1,960
Year 1 (after setup cost). Year 2+: $2,160/year (95% less).
That's $180 saved every month.
Hoppscotch Community Edition runs on a $10/mo VPS with unlimited users. Setup by upready.dev starts at $200 (one-time). Postman pricing as of March 2026.
Why teams switch from Postman
- → Data ownership. Your data stays on your server -- not on Postman's infrastructure.
- → Predictable costs. Pay a fixed VPS cost instead of growing per-user or per-usage fees.
- → No vendor lock-in. Export and migrate your data anytime. You control the database.
- → GDPR and compliance. Hosting your own tools simplifies data residency and compliance requirements.
Head-to-Head Comparisons
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