| Component | Authors | Site | Download | Comments |
| TGifImage | Anders Melander | www.melander.dk | gifimage_src0202.zip | The Unisys Patent has now expired ! |
| TPngImage | Eric Engler et al | Geocities | pnglib24a.zip | Better than GIFs ! May be replaced by Daud's component. |
| TCalcExpress | AidAim software | http://www.aidaim.com/ | obtain from AidAim | Permits user-defined functions |
| TXlsReadWrite | Axolot Data | http://www.axolot.com/ | obtain from Axolot | Allows export to Excel file format |
| Curvefit | Allen Miller, Juergen Loewner, Jeff Weiss, David J Taylor |
www.satsignal.net | curvefit.zip | Permits polynomial fits; Note: the original is not compatible with TPlot! |
Most of these third party components are now in the TPlot distribution.
Please check the original author's page for licensing and upgrades.