Smart Pendulum
Java applet explores a pendulum with rope of variable length. The solution implements 4-th order Runge-Kutta method for differential equations.
http://odin.prohosting.com/~evgenik1/pend.htm

Pendulum Energy
Pendulum Energy has helped its clients map out processes and streamline those processes key to increasing productivity and profitability
http://www.pendulumenergy.com

The Simple Plane Pendulum
This applet illustrates the simple plane pendulum, with or without damping. The user enters the damping coefficient and initial conditions, and the applet animates the pendulum's motion and plots the angular velocity versus the angle. Such a plot is called a phase portrait.
http://www.iopb.res.in/~vshenoi/scienceday/fundemoapplets/JAVA/pendulum/pendulum2.html

Ocean Spring and Metal Manufacturing Ltd
manufacturer and exporter of compression spring, extension spring, torsion spring, battery spring, mortor spring, antenna spring, seat spring, spring pins, metal stamping, auto lathe product.
http://www.oceanspring.com.hk

Ophioglossum pendulum
Photographic image.
http://www.botany.hawaii.edu/faculty/carr/images/oph_pen.jpg

Dierama pendulum
Information on this species with several photographs.
http://www.plantzafrica.com/plantcd/dieramapend.htm

Trillium pendulum
Providing botanical, folk-lore and herbal information, plus organic herbs, and herbal products.
http://www.botanical.com/botanical/mgmh/b/bethro34.html

Three-Degree-of-Freedom Pendulum
Java simulation.
http://odin.prohosting.com/~evgenik1/pend3.htm

The Spring Experience
SpringOne Americas
http://www.thespringexperience.com

Elson & Robbins - Wade Spring
Wade Spring manufacture traditional mesh top seating, fishmouth springs, zig zag sinuous springs and springs for the contract and specialised markets.
http://www.wade-spring.co.uk