Best Self-Hosted Testfully Alternatives in 2026
Testfully is an API testing platform with test automation, monitoring, and collaboration for development teams.
10 Self-Hosted Alternatives to Testfully
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.
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.
Voiden
675Voiden handles offline-first API workspace as a self-hosted solution.
Why Look for Testfully Alternatives?
Testfully is an API testing platform with test automation, monitoring, and collaboration for development teams.
Self-hosted alternatives give you full data ownership, predictable costs, and zero vendor lock-in. You run the software on your own infrastructure and control everything.
10 Best Open-Source Alternatives to Testfully
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.
Hoppscotch Community Edition
An open-source alternative for API development. — 78,470 GitHub stars. Licensed under MIT.
Read full Hoppscotch Community Edition review
Why Self-Host Instead of Testfully?
- Data ownership. Your data stays on your server, not on Testfully’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.
Why teams switch from Testfully
- → Data ownership. Your data stays on your server -- not on Testfully'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.
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