维基媒体聊天
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维基媒体聊天（https://chat.wmcloud.org）是一个文本聊天系统，它使维基媒体用户能够进行实时的、线程化的对话，而无需使用像Slack、Facebook或Microsoft Teams这样运行闭源软件的商业服务，这些服务可能会跟踪和使用私人（元）数据。您可以在介绍它的博文中阅读更多关于维基媒体聊天的信息。
与 IRC 相比，维基媒体聊天提供：
- 能够在离线时回滚并阅读消息
- 能够搜索讨论历史
- 能够在收到通知时接收电子邮件
- 推送通知和电子邮件通知
- 能够在无需使用隐匿工具的情况下对他人隐藏自己的 IP 地址
- 对分享媒体的适当支持
- 一个翻译成十几种语言的界面。
- 双重认证
- 适当的移动应用支持
- 能够添加自定义表情符号（是的，这极其重要）
- 头像照片
- 能够使用 @here 或 @channel 提及所有人
- 还有更多更多。
它是维基媒体社交套件的一部分，是在维基媒体CloudVPS上安装的Mattermost开源软件系统；由于维基媒体Cloud政策，消息将在那里保留90天，并且在最初的Beta测试阶段，成员资格需要现有成员的邀请。
Technical documentation can be found at Wikimedia Chat on Wikitech. The code of conduct for Wikimedia technical spaces applies including to private messages.
隐私政策
By using this project, you agree that any private information you give to this project may be made publicly available and not be treated as confidential.
By using this project, you agree that the volunteer administrators of this project will have access to any data you submit. This can include your IP address, your username/password combination for accounts created in Cloud Services services, and any other information that you send. The volunteer administrators of this project are bound by the Wikimedia Cloud Services Terms of Use, and are not allowed to share this information or use it in any non-approved way.
Since access to this information is fundamental to the operation of Wikimedia Cloud Services, these terms regarding use of your data expressly override the Wikimedia Foundation's Privacy Policy as it relates to the use and access of your personal information.
Matterbridge
Matterbridge is a software to transfer messages between Mattermost and other chat systems. For example it operates between Wikidata Wikimedia Chat channel and #wikidata连接 IRC channels. If you have a request between a Mattermost channel and another IRC channel, or Discord channel, or Telegram group, please create a Phabricator task.
使用
Good practice in naming is to when joining to use the Wikimedia username/full_name so that your profile matches the account in Wikimedia spaces *(this might later be synced/connected).
良好用例包括：
- groups that need to coordinate and collaborate across different time-zones and therefore benefit from persistent chat channels, shared playbooks and kanban-boards (normally available only to Wikimedia developers)
- events that invite diverse participants around a bigger theme or set of topics
- 那些通常可能使用 IRC 和/或 Telegram 的用户（因为它能够桥接两者）。
- 需要改进和拓展的（不像 Telegram，更像 Slack）。
不良用例包括：
- 需要保存超过3个月的通信和文件/URL交换。
- 需要高度隐私/加密的通信。