API Model Forge Alternatives

Apps similar to API Model Forge include quicktype, which is free and open source. Other options are Formaty and JSON OS. In total there are three JSON Viewers like API Model Forge for the web.

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API Model Forge alternatives page was last updated Oct 26, 2026

quicktype
1 like
quicktype generates types and helper code for reading JSON in C#, Swift, JavaScript, Flow, Python, TypeScript, Go, Rust, Objective-C, Kotlin, C++ and more. Customize online with advanced options, or download a command-line tool.
Cost / License
Free
Open Source (Apache-2.0)
Origin
United States
Since
Since 2021
Platforms
Online
Xcode
Visual Studio Code
Microsoft Visual Studio
United States
+1
Good alternative?Is quicktype a good alternative to API Model Forge?
Formaty
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Formaty is a browser workspace for everyday developer data. Paste JSON, XML, YAML, TOML or CSV and it is auto-detected and formatted. View it as a tree, table or graph, query it with JSONPath, and generate TypeScript, Zod, Go, Python, JSON Schema or SQL from it.
Cost / License
Free
Open Source (MIT)
Application type
JSON Viewer
Since
New
Platforms
Online
Good alternative?Is Formaty a good alternative to API Model Forge?
JSON OS
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Free JSON & Markdown workbench — format, validate, diff, chart, generate types, test APIs. Runs 100% in your browser, no signup, no uploads.
Cost / License
Free
Open Source (MIT)
Application type
JSON Viewer
Origin
India
Since
Since 2026
Platforms
Online
India
+6
Good alternative?Is JSON OS a good alternative to API Model Forge?

3 of 3 API Model Forge alternatives