Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.

This is a category of articles relating to software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy: "free software" or "open source software". Typically, this means software which is distributed with a free software license, and whose source code is available to anyone who receives a copy of the software. This category includes both:

• internetworking software, such as the UNIX daemon program "routed"
• other software that is designed to provide services (usually to a remote application) on the Internet or similar networks.