Project Summary
Ryzom Core is the opensource project related to Ryzom Game. Written in C++, Ryzom Core contains the whole code (client, server, tools) used to make the commercial MMORPG Ryzom. Ryzom Core is a toolkit for the development of massively online universes. It provides the base technologies and a set of development methodologies for the development of both client and server code.
Ryzom Core is open source and released under the terms of the GNU Affero General Public License 3.0 (GNU/AGPLv3) for the source code and the Creative Commons Attributions-ShareAlike 3.0 (CC-BY-SA) for the art assets.
In a Nutshell, Ryzom Core...
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has a well established, mature codebase
maintained by a average size development team
with increasing Y-O-Y commits -
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took an estimated 653 years of effort (COCOMO model)
starting with its first commit in May, 2010
ending with its most recent commit 14 days ago
Quick Reference
Creative Commons Attribution Share Alike 3.0
Permitted
Commercial Use
Modify
Distribute
Rename
Forbidden
Sub-License
Required
Include Copyright
State Changes
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These details are provided for information only. No information here is legal advice and should not be used as such.
GNU Affero General Public License v3.0
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Sub-License
Hold Liable
Required
Disclose Source
Include Copyright
State Changes
Include License
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryAug 11 2026 — Sep 10 2026
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12 Month SummarySep 10 2025 — Sep 10 2026
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