Developer Force brings together the content, community and technologies of on-demand development, and serves as the centerpoint of the Force.com developer universe. Most of the ever-growing collection of code samples, documentation, tools, and other technical resources for building and customizing apps on the Force.com platform are available on the public site, but free membership on Developer Force brings you much more.
Sign up and get a free Developer Edition to get a complete personal development environment.
A fully-functional Developer Edition account, which provides you your own unique developer org and the opportunity to explore development on the Force.com platform for free. This account also gets you access to the Force.com IDE - an integrated development environment, and a number of licenses: 2 Salesforce CRM licenses, 2 Salesforce Mobile licenses, 3 Salesforce Platform licenses, 5 Partner licenses and 10 Customer Portal Manager licenses.
Access to pre-release technology programs and pilots, special events, and other valuable members-only opportunities
A personalized community profile and Q&A posting rights on the Discussion Boards
The ability to contribute, edit, and subscribe to the vast collection of technical content on the Wiki
Subscription to the Force.com Developer News, a monthly digest of the latest technology, content, and program news
Discounted business services and the other members-only benefits of the On-Demand Startup Kit (details here), including: