Restlet Framework包含三个不同的发布类型：

包括   稳定版(stable)，测试版(testing) 和 不稳定版(unstable)是参照 Debian Linux 的发行版的规则。

• "Stable" is the release that we recommend for applications in production. The API of this release is frozen and only bug fixes are made. 

稳定版是推荐正式产品使用的发行版，发行版的API 已经固定，只做一些Bug的修复。

• "Testing" is the release that we recommend for new developments. We are looking for feedback and contributions regarding bugs and missing features. You will find it in the “Other releases” tab above, select the most recent Branch and either a “M” (Milestone) or “RC” (Release Candidate”) Release.

测试版是推荐新开发项目中使用的。测试版会搜集用户的反馈和建议，修复错误和一些新的特性。

测试版会带有M(里程碑)或者RC(候选发布)。

• "Unstable" is the release where active development happens. It corresponds to builds of the development trunk passing all unit tests. You will find it in the “Other releases” tab above, select the most recent Branch and the “Snapshot” Release.

不稳定版是还在开发中的版本，以快照的方式发布，带有Snapshot字样。