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Some software projects and some Debian developers provides extra repositories that you can use besides the official ones. There are various reasons why the software availaible in these repositories is not packaged in Debian. It could be because the software is not yet in Debian (dotdeb), legal concerns (deb-multimedia), or because the software itself is closed-source (e.g., Oracle, Opera). We use the following tags to describe the repositories, to get an idea of the trust you can put in these repositories.

These tags can be combined

NB: The package search engine, covers many unofficial repositories, but is now outdated.

Here is a list of known places :