Hi Van B! You may have remembered DeleD, which is a 3D application for Windows I did develop 10 years ago together with Paul-Jan Pauptit.
It was developed in Delphi. Active development of DeleD stopped in 2010 but the program is still available for download at www.delgine.com
3D coding has always been my passion and now that web technology allows advanced 3D graphics in a browser (with the arrival of web-gl etc), I decided to recreate DeleD from skratch. Have been working together with Paul-Jan Pauptit again, too. The app is now called DeleD Designer and we're working hard to make it more advanced than the original DeleD in many areas.
It's cool to see you remember DeleD - that strengthens us in the believe we're on the right track!