Welcome to maemo.org!
From the site:
Maemo is a development platform to create applications for the Nokia 770 Internet Tablet and other maemo compliant handheld devices. It is meant for developers with personal or commercial interests in developing software for handhelds like Internet Tablets. The software and developer community website is contributed to this audience and operated by Nokia. The platform is composed of popular open source software components, which are widely deployed in the leading Linux desktop distributions today.