In this new post to his blog Fabien Potencier offers some of his own supporting reasons for choosing the Symfony framework over some of the other options out there, providing some of the "main selling points" it offers.

I like to think that most popular frameworks are modular enough, fast enough, well-documented enough; they are using well-known design patterns. So, besides the buzzwords, what is unique to Symfony? Why would you want to use Symfony instead of Z? That's the question I'm going to answer in this post.

Included in his list of plusses in Symfony's favor are things like:

• Symfony is not a framework but a project.
• Symfony enjoys a huge community of users and contributors.
• Symfony embraces the "don't reinvent the wheel" philosophy, and provides tight integration with many other Open-Source projects.
• Symfony tries to bring innovation to PHP

Check out the comments for more reasons from other members of the Symfony community.