Sketchup

Great script that allows you to instantly align objects to the surface below. A common example would be scattering people / trees / entourage around a sloping site. With this script, just select your objects, click drop and they instantly fall to the surface below. Easy as can be!

Please see this page at my blog for more information.

IRender is a the fully integrated plug-on for SketchUp rendering solution for SketchUp.

3D Rad Exporter is a free plug-in for SketchUp allowing you to easily export 3d models to ready-to-use 3D Rad objects.

This means you can now create stand-alone interactive visualizations, 3d games and simulations from your own SkecthUp 3d models or any model from the 3D Warehouse.

DirectX .X File Exporter for Google SketchUp

Opens a dialog to select entities by type (edge, face, group, or instance.) This is a very basic tool (toy?), but could be expanded to include multiple criteria (such as selecting by Layer or material.)

You can now make TRUE photo-realistic rendering of your SketchUp model
without the pain and frustration of learning a complex program. Podium
runs completely inside SketchUp from start to finish. It uses SketchUp
features such as textures, background colors, groups and shadows to
achieve impressive results. Podium is intuitive to SketchUp users.
Plus, its simple interface cuts the learning curve to minutes instead
of days. Make an impression without the pain. SU Podium works with
SketchUp 5 or 6, Pro or Google SketchUp.

Right-click an arc or circle to insert its centerpoint into the model.

This script adds a Sphere option to SketchUp's Draw menu.

Please visit my blog fro the latest version of all my plugins.

Please see my blog for more information and to download this script. 

This small plugin creates a new toolbar button to open the Ruby Console window.
The .zip file contains a script and an image. Extract and then copy all the files to your Plugins directory.

Adds a new Layer that is turned off by default - not only for existing pages (or scenes), but for any new pages (or scenes.) Should work with SketchUp versions 5 or 6.

This script takes all currently selected faces, and triangulates them by adding a vertex at the centroid of each face and connecting all vertices of that face to it. It's a really simple method of triangulation, and there is an optional parameter called 'all' that if set to true, will triangulate every selected face, including faces which are already triangles.

Here are three techniques for improving three specific areas of SketchUp that affect nearly every large-scale architectural project: interactivity, output time and file size.

School is a great resource for learning SketchUp. Try their podcasts covering tips, tricks, and applications for a variety of professions, or check out their interactive DVD, SketchUp Level One. The DVD covers the basics, but that should not deter self proclaimed SketchUp masters because School provides a 100% guarantee that the DVD will teach even the experienced user some new tricks. School is the place to go to connect with other interested users, discuss SketchUp related topics, and post questions. If you post a question in the School forums, then you might wind up being the topic of one of their weekly podcasts.