Effects by Manufacturer
As you can see from the Effects page, we did spend some time trying to create some reasonable criteria for separating "Vintage" and "Modern".
Ultimately we decided that posting articles under such criteria was not helpful because our criteria is admittedly arbitrary. The criteria is arbitrary because the Wheels of Time continue to march. We currently do not foresee the time when software-only effects will eclipse the current market of circuit-based effects. That time could be tomorrow, it could be in 50 years. We don't know.
So until that changes, the definitions of "vintage" and "modern" seem premature. Currently, our observation is that software-only effects, as used by a musician in the performance of a piece of music, don't seem to have broad acceptance. Whether this is because artists are unfamiliar with the brands and products making such processing available, or if it's because the software isn't up to the sound standards of artists, or because of lousy human interfaces, or whatever other reason? Truthfully, we just don't know and as of the current moment, it seems to us that trying to break out the wiki into "vintage" and "modern" effects sections is counter-productive.
With respect to the list below, there are far too many effects manufacturers for us to list them all here. If you're looking for a comprehensive database of all possible effects and effects manufacturers, we recommend checking out DiscoFreq's Guitar Effect Database at effectsdatabase.com. We use those names that we believe are among the best-known or that at one time stood out as having created a new, and unique product.
We are certainly open to updating the list here (that's why this is a wiki living document), but adding to this current list should require some kind of justification beyond "But I really like this!"
Listing is alphabetical.