> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qomicex.top/llms.txt
> Use this file to discover all available pages before exploring further.

# License and privacy

## License and privacy

This page contains the full copyright notice, open-source license list, and privacy policy of Qomicex Launcher. Entry point: **Settings → About → License and privacy (Copyright & privacy)** in the launcher.

## Copyright notice

**Qomicex Launcher** is developed and maintained by the **Qomicex team**, and the copyright belongs to the Qomicex team.

* This software is released under the **GPL-3.0 License**, and you may freely use, copy, modify, and distribute it as long as you comply with that license.
* This software has no affiliation, partnership, or endorsement relationship with **Mojang Studios / Microsoft** or their products.
* **Minecraft** and related names, logos, and copyrights are owned by **Mojang Studios / Microsoft**.
* This software does not include the Minecraft game itself; the copyright of game assets belongs to their respective owners.
* By using this software, you confirm that you have read and agree to the Terms of Service (User agreement) and the Privacy Policy (Privacy policy).

## Custom widget security

Custom dashboard widgets (QWidget) can run TypeScript, execute local commands, call plugin APIs, read local files, and may change behavior through silent updates. Only use widgets you trust. The launcher developers are not responsible for risks caused by custom widgets. See [Dashboard custom widgets](https://docs.qomicex.top/en/guide/custom-widget/index.md).

## Terms of Service

The full Terms of Service are on the official website: [https://www.qomicex.top/legal/user-agreement](https://www.qomicex.top/legal/user-agreement)

## Privacy Policy

**Last updated: September 2026**

Qomicex Launcher (hereinafter "this software") is developed and maintained by the Qomicex team. We take your privacy seriously, and this policy explains how we collect, use, and protect your information.

### 1. Legal notice

* This software has no affiliation, partnership, or endorsement relationship with **Mojang Studios / Microsoft** or their products.
* **Minecraft** and related names, logos, and copyrights are owned by **Mojang Studios / Microsoft**.
* This software does not include the Minecraft game itself; the copyright of game assets belongs to their respective owners.
* By using this software, you confirm that you have read and agree to the Terms of Service and this Privacy Policy.

### 2. Scope of data collection

This software may collect the following information:

| Data type | Description | Purpose | Anonymous |
| - | - | - | - |
| Microsoft account credentials | Used for Minecraft authentication (Microsoft login method only) | Authentication | No (stored locally) |
| Plugin error telemetry | Plugin ID, version, error type | Improve the plugin ecosystem | Yes |
| Crash reports | Error stack, device information (OS, CPU, memory) | Diagnosis and fixes | No (contains device information) |
| Crash logs | Minecraft crash logs, game logs | Problem diagnosis | No (contains path information) |
| Launcher version | Current version number | Update checks | Yes |
| License information | Hardware fingerprint + license token | License verification | No (license-required builds only) |

### 3. How data is used

* **Account credentials**: used only to authenticate with Microsoft/Minecraft services and never transmitted to third parties
* **Error telemetry**: used to improve the stability of the plugin ecosystem; fully anonymous and free of personally identifiable information
* **Crash reports**: used to diagnose and fix software problems, sent with your consent or when a critical error occurs
* **Crash log sharing**: when you run crash analysis, the system automatically uploads the crash log to the third-party mclo.gs service to generate a shareable link
* **Version information**: used only to check for software updates
* **License information**: used only to verify your authorization to use the software (license-required builds only)

### 4. Data storage and retention

* **Account data**: stored on your local device; you may choose to delete it when uninstalling the software
* **Crash reports**: retained for 90 days, then deleted automatically
* **Telemetry data**: retained for 365 days, then anonymized automatically
* **License information**: retained for as long as the license is valid

### 5. Data security

* We use industry-standard security measures to protect your data
* HTTPS encryption is used in transit
* Sensitive data stored locally (such as tokens) is encrypted at rest
* We do not sell, trade, or otherwise transfer your personal data to third parties

### 6. Third-party services

This software interacts with the following third-party services:

| Service | Purpose | Data transmitted | Privacy policy |
| - | - | - | - |
| Microsoft | Account authentication | OAuth token | [https://privacy.microsoft.com](https://privacy.microsoft.com) |
| mclo.gs | Crash log sharing | Crash log content | [https://mclo.gs/privacy](https://mclo.gs/privacy) |
| api.qomicex.top | Update checks, error reports | Version information, crash reports | This policy applies |
| plugins.qomicex.top | Plugin store | Plugin queries, install records | This policy applies |

### 7. Cookies and local storage

* This software uses local storage (LocalStorage) to save your preferences
* This software does not use browser cookies
* Locally stored data is not accessed by third parties

### 8. Cross-border data transfer

* This software primarily operates within China
* The crash log sharing service (mclo.gs) may involve cross-border data transfer
* Using third-party services indicates your consent to the relevant data transfer

### 9. Your rights

* **Right of access**: you may view locally stored account data at any time
* **Right of deletion**: you may delete locally stored account data at any time
* **Right of control**: you may turn automatic error reporting and plugin error telemetry on or off in the settings at any time
* **Withdrawal of consent**: you may withdraw your consent to this Privacy Policy at any time

### 10. Protection of minors

This software does not collect personal information from minors under the age of 14. If you are a minor, please use this software under the guidance of a guardian.

### 11. Policy updates

We may update this Privacy Policy from time to time. Updated versions will be published within this software. For significant changes, we will notify you inside the software.

### 12. Contact us

If you have privacy-related questions, contact us through:

* Official website: [https://www.qomicex.top](https://www.qomicex.top)
* Email: [support@qomicex.top](mailto:support@qomicex.top)

## Open-source licenses

The launcher is released under the **GPL-3.0 License**: [https://www.gnu.org/licenses/gpl-3.0.en.html](https://www.gnu.org/licenses/gpl-3.0.en.html)

### Backend dependencies

**Rust backend runtime**

| Project | Version | License |
| :- | :- | :- |
| Rust | stable | MIT/Apache-2.0 |
| axum | 0.8 | MIT |
| tokio | 1.x | MIT |

**Core libraries**

| Project | License |
| :- | :- |
| qomicex-core-rust | GPL-3.0 |
| qomicex-connector-rust | GPL-3.0 |
| qomicex-downloader-rust | GPL-3.0 |

### Frontend dependencies

**Core frameworks**

| Project | Version | License |
| :- | :- | :- |
| react / react-dom | 19.1.0 | MIT |
| react-router-dom | 7.18.0 | MIT |
| @tauri-apps/api | 2.x | MIT |
| @tauri-apps/plugin-opener | 2.x | MIT |
| @tauri-apps/plugin-dialog | 2.7.1 | MIT |

**UI components**

| Project | Version | License |
| :- | :- | :- |
| @radix-ui/react-checkbox | 1.3.5 | MIT |
| @radix-ui/react-slot | 1.3.0 | MIT |
| @fortawesome/\* icon libraries | 7.2.0 / 3.3.1 | MIT |

**Styling and utilities**

| Project | Version | License |
| :- | :- | :- |
| tailwindcss | 3.4.19 | MIT |
| class-variance-authority | 0.7.1 | MIT |
| clsx / tailwind-merge | — | MIT |

**Animation**

| Project | Version | License |
| :- | :- | :- |
| gsap / @gsap/react | 3.15.0 / 2.1.2 | see site |

**Rendering and display**

| Project | Version | License |
| :- | :- | :- |
| react-markdown / rehype-raw / remark-gfm | 10.1.0 etc. | MIT |
| skinview3d | 3.4.2 | MIT |

## Service acknowledgements

| Service | Capability provided |
| :- | :- |
| [Modrinth](https://modrinth.com) | Mod and resource search API |
| [CurseForge](https://www.curseforge.com) | Mod and resource search API |
| [FTB](https://www.feed-the-beast.com) | Modpack API |
| [BMCLAPI (bangbang93)](https://bmclapi2.bangbang93.com) | Download mirror service |
| [MCMod (mcmod.cn)](https://www.mcmod.cn) | Chinese mod database |
| [Minecraft website](https://www.minecraft.net) | Official website; please support the official release |
| [xphost008](https://github.com/xphost008) | Reference tutorial on the launch process |

## Reference projects

| Project | What was referenced |
| :- | :- |
| [HMCL](https://github.com/HMCL-dev/HMCL) | Version detection reference |
| [ProjBobcat](https://github.com/Corona-Studio/ProjBobcat) | ModLoader installer reference |
| [PCL-CE](https://github.com/PCL-Community/PCL2-CE) | Source of mod Chinese name data files |


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