AV Software, the application most commonly used by British AV workers
Now in version 8 http://www.wnsoft.com/

Download the User Guide for the latest version of PTE from here http://docs.picturestoexe.com/en/main

Download the User Guide for PTE7 from here http://www.wnsoft.com/files/picturestoexe/user-guides/7.0/PicturesToExe_User_Guide_v70.pdf

Here you can download every earlier version of PTE, especially 4.49 which can do things not possible in later versions such as fade from the desktop to the first image http://www.wnsoft.com/archives/

Very useful tool for editing PTE programmes via a spreadsheet, and for changing the path to sound and picture files e.g. when using a different computer
Download v1 for PTE 4x
Download v2 for PTE 5x http://www.diapovision.com/articles.htm

An alternative to PTE for Mac users https://boinx.com/fotomagico/

Sound editing Software http://www.adobe.com/products/audition/

Free sound editing software http://audacity.sourceforge.net/

Hi spec digital audio editor being marketed by Serif for £12.
Free ("Basic") edition available from the Acoustica website https://acondigital.com/products/acoustica-audio-editor/

Photo editing software http://www.adobe.com/products/photoshop/

Adobe have made early versions of their products available to download at no cost. All the components of the CS2 Suite are there: including Photoshop CS2, Creative Suite CS2, Audition 3, Premier Pro 2, Elements 4/5, together with the serial numbers needed for installation. http://www.adobe.com/downloads/cs2_downloads/index.html

Photo editing software http://www.corel.com/

PixBuilder Studio, the "Audacity" version of Photoshop, and completely free http://www.wnsoft.com/pixbuilder/

Photo editing software by Serif http://www.serif.com/photoplus/

Fully working starter editions of earlier versions of PagePlus, PhotoPlus, WebPlus, DrawPlus, MoviePlus, PanoramaPlus http://www.serif.com/FreeDownloads/

Useful free photographic utility for changing colour depth, creating icons etc. http://www.irfanview.com/

ImgBurn is a free lightweight CD/DVD/HD DVD/Blu-ray burning application that everyone should have in their toolkit!
Especially useful for foolproof burning of PTE projects onto DVD http://www.imgburn.com/

Excellent freeware utility for batch resizing of images, changing colour depth, adding watermarks, converting and renaming file types etc. http://www.faststone.org/FSResizerDetail.htm

Resources for your image-processing application.
Has several own products which are highly recommended, especially Focal Blade for image sharpening. http://www.thepluginsite.com/

Essential utility for capturing screenshots of your computer.
Other Wisdom-soft products include AutoScreenRecorder, MotionStudio, MotionGif (for creating animated gifs) http://wisdom-soft.com/

Software for camera clubs to run competitions - including KnockOut, Panel, InterClub and "Mix and Match" competitions www.filmfreeprojection.co.uk/

AV Software, used by many continental AV workers http://www.stumpfl.com/

AV Software www.dgfectsav.com

AV Software http://www.photodex.com/

German AV programme http://www.mobjects.com/

French AV programme, now discontinued but still available to download http://www.globfx.com/downloads/discontinued/composer/

Send large files (up to 2GB) over the internet. Quick, free, no registration required. https://www.wetransfer.com/

For sending large files over the Internet https://www.yousendit.com/