应用程序服务器还必须是开放系统，使用标准协议，以便于可以添加或更改服务、添加或更改设备以及应用定制。
The application server also must be an open system, using standard protocol to make it easy to add or change services, add or change devices, and apply customizations.
最终的目标是要建立一个存在自由软件、建设网络协议和开放性软件代码的公共空间。
The goal, ultimately, is to create a public space that enables the existence of free software... built via the principles and code of open software.
fish是由Axel Liljencrantz创建的一个开放源码项目，采用的许可协议是GNU General Public License, version 2。
Fish is an open source project created by Axel Liljencrantz and licensed under the GNU General Public license, version 2. As of this writing, the latest version of fish is 1.23.0.
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