Hi,
It is hard to say which one is the most best profesional, that depends on your requirement.
You need a SWF format file, burning a VCD/DVD or sharing online?
Bellows are kinds of Slide Show Software:
1. Free apps that can create photo slideshows.
Google’s Picasa, is a free software download from Google. Picasa can
make photo slideshows with simple clicks and copy files to DVD media using both the "Backup" and "Gift CD" features, but DVDs create by Picasa can not be played on all types of DVD players.
Windows Movie Maker 2, included free in XP and Vista, helps to create AVI or WMA slideshows. Although it doesn’t natively burn DVDs playable by many DVD players, Windows Movie Maker has
many powerful features (say exquisite effects) to magnetize users and adding DVD writing capabilities to Windows Movie Maker with inexpensive applications will figure it out.
2. Commercial apps wholly make for creating DVD slide shows.
Nero PhotoShow Deluxe 5 ($39.99) is famous and powerful software which includes a massive amount of slide-show-authoring options for photo DVDs. Nero has a 15-day trial for PhotoShow Deluxe, while the free PhotoDVD trial lets you create slide shows with up to 100 images. As a sub-product from Nero,
it has highly stability on its writing capability. DVD Slideshow Builder 4 ($39.95), another professional and popular app that can create DVD photo slideshows with photos, video clips and music in high-resolution HD DVD video format and burn directly. It provides a free trial version with Watermark on output, 30-day trial limitation. What it attract me is
its plenty 2D/3D transitions and Ken-Burns effects.3. Online Serve
Slide.comsome other slideshow software such as Flash Slideshow Builder, Flash Slideshow Maker, Proshow and etc.
QUOTE (starwriter @ Apr 15 2008, 09:46 AM)

Who is the best professional slide show software?
Sorry on my bad English.