PHP on TRAX is a framework in PHP uses the concept of Ruby on Rails. John Peterson build PHP on TRAX to let the users develope in MVC ideas.

Editor Comments:

Many PHPers turned toward Ruby on Rails, include Jaime Wong. Most PHPers like the how Ruby on Rails' design method, and PHP on TRAX is like one of the projects stop more PHPers turn to the other side.

OpenLayers' self expansionary "about":

OpenLayers makes it easy to put a dynamic map in any web page. It can display map tiles and markers loaded from any source.

Here is a demo you can try.

OpenLayers can use the data from Google Map and other sources, here is a view of OpenLayers use different source of maps

Editor Comment:

OpenLayers is must have if you uses Google Map. Because let the users chose which company provides the map source is joyful for them.

mon.itor.us offers free web monitoring 24/7. It can monitor the site's speed, uptime and show result in different views include table, bar chart and line chart. The picture below is how mon.itor.us works.

Editor Comment:

My favorite is how mon.itor.us can show information to the user in different ways, include IM and widget for Google page.