Gson is an open-source developer tools & cli tool — Java library for converting Java objects to JSON and back. It is written in Java.

Is Gson free and open source?

Yes. Gson is free and open source, released under the Apache-2.0 license. You can view and contribute to the source at https://github.com/google/gson.

What language is Gson written in?

Gson is primarily written in Java.

What are open-source alternatives to Gson?

Other open-source developer tools & cli tools on OSSDrop include VS Code, Oh My Zsh, MarkItDown, Go.

Gson

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Java library for converting Java objects to JSON and back.

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Developer Tools & CLI·Apache-2.0·Java·24.2k stars·added 2026-08-30

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Frequently asked

What is Gson?
Gson is an open-source developer tools & cli tool — Java library for converting Java objects to JSON and back. It is written in Java.
Is Gson free and open source?
Yes. Gson is free and open source, released under the Apache-2.0 license. You can view and contribute to the source at https://github.com/google/gson.
What language is Gson written in?
Gson is primarily written in Java.
What are open-source alternatives to Gson?
Other open-source developer tools & cli tools on OSSDrop include VS Code, Oh My Zsh, MarkItDown, Go.

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