Android FOSS repository client (F-Droid is a robot with a passion for Free and Open Source software) provides easy access to a number of interesting FOSS applications.
You can download and install F-Droid application directly from f-droid.org, browse repository online or read reviews.
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Hosting your own F-Droid repository
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As the project is Open Source you can easily host your own repository.
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To do so just grab <a href="https://gitorious.org/f-droid/fdroidserver">F-Droid Server</a> source code and follow <a href="http://f-droid.org/manual/">manual</a>.
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