My WordPress development has come to a stand still quite some time ago. Mainly because my work development has nothing todo with web and PHP anymore and my personal interest has moved to Python and Django.
The latest version of the WP-PagesNav plugin can be downloaded here and the documentation is still up here. There is a public read-only SVN repository available on wp-plugins.org. If you want to continue development I could ask the wp-plugins.org maintainers to give you write access and remove me from the repository.
Randy Petermann the original author of StatTraq seems to have picked up development again. The new StatTraq home is here.