# OpenRS2

> OpenRS2 develops a server compatible with RuneScape client build 550 and associated client-analysis tools. Its Kotlin source includes deobfuscator modules, while technical notes document client parameters and game data structures.

- Type: Project
- Targets: Game
- Category: Game analysis tools
- Relationship: Foundation tool
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/openrs2/openrs2>
- Primary source: <https://github.com/openrs2/openrs2/blob/50175bc519947775938405f6288be15fe70b7363/CONTRIBUTING.md>
- Catalog page: <https://awesomerea.org/resources/openrs2/>
- Record JSON: <https://awesomerea.org/resources/openrs2/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/openrs2/index.md)

## Requirements & limits

- **Prerequisites:** JDK 17 or later is required, including for prebuilt copies.
- **Prerequisites:** Users must supply the original RuneScape client code, data and location-file encryption keys in nonfree/.
- **Limits:** The author describes the project as early-stage, with current work focused on infrastructure.
- **License:** ISC license.

## Primary sources

1. <https://github.com/openrs2/openrs2/blob/50175bc519947775938405f6288be15fe70b7363/CONTRIBUTING.md>
2. <https://github.com/openrs2/openrs2/blob/50175bc519947775938405f6288be15fe70b7363/README.md>
3. <https://github.com/openrs2/openrs2/blob/50175bc519947775938405f6288be15fe70b7363/share/doc/client-parameters.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.