PowerPoint Add-ins: Editing

Perspector - Gives your presentations a distinct, professional look using 3D slides and charts. Integration with PowerPoint means that great 3D effects are always at your fingertips.
Visual Exemplars - 8 Nether Craigwell, Edinburgh, EH8 8RD, UK
Email:
Internet: Perspector

WowChart - WowChart allows you to easily add spectacular rendered and animated 3D charts to your PowerPoint presentations. Grab your audience's attention and allow them to visualize your data in the clearest and most professional way.
Crunchy Software Pty Ltd / Paul Jones - Wodonga, Victoria, Australia
Phone: +612 60242745
Fax: +612 60242745
Internet: Crunchy Software.com

NXPowerLite - Reduces the size of your PowerPoint files by optimizing the graphics and embedded documents contained within them. It can effortlessly compress presentations making them easier to handle, distribute and use. The free, fully functional trial version will compress up to 10 presentations.
Neuxpower - 2nd / 3rd Floor, 103-105 High Street, Watford WD17 2DQ, Herts, UK
Phone: +44 (0) 870 2306200
Fax: +44 (0) 870 2306300
Email:
Internet: Nxpowerlite.com

Graphicae - A ground breaking productivity add-in that extends PowerPoint’s existing functionality by adding time saving tools and additional features to make slide creation quick, efficient, and rich. It also adds unique capabilities that take your slide creation to a whole new level of sophistication with, little effort.
Proof Software - Fairview Rd, Canton, MA 02021, United States
Email:
Internet: Proof Software.com