Finding open source software
Deciding which software to use?Freshmeat is an index of Linux/Unix software.
Wikipedia maintains software comparison pages which can be a good starting point for deciding which software to install.
Package management toolsThe best way to install open source software is usually through a package management tool or installer because this ensures that lists of installed or available software can be accessed; software can be uninstalled and dependencies between different software tools can be tracked.
A search engine for finding packages for Linux: RPM Seek
For Windows: Cygwin
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