Your VST folders will tell you the "date modified" of the .dll files and folders in Windows. You could choose to list them in order of age if that makes it easier.
Most cheap and free VSTs aren't updated as often as commercial ones, if at all. Check out the webpages of the ones you really expect to use - the rest do not matter. U-HE regularly update both free and commercial VSTs.
Many commercial VSTs now have update warnings when you open them, so at least download the latest versions of your favourite VSTs and see what happens with them.
|