[..] The really killer feature of VVVV for me is that there is no runtime mode or compiling process between you and your results. It is basically like doing open brain surgery on your program [..]
Kyle McLean on createdigitalmotion, 25 04 10

never bring too many of V4´s possibilities to your mind at the same time!
Michael Höpfel, 03 11 08

[..] Its not for everyone, but for more unusual uses ie arts installations (see licence agreement on site) or for prototyping things its fantastic. Oh and it almost never crashes (except when disconnecting freeframe objects)... People who should check it out:- Arts practitioners, Vjo users, PC based MAX/msp /PD users, computer geeks.... People who shouldn't:- if you get scared looking at circuit diagrams or the word boolean brings you out in hives, then its probably not for you... I lovvvve it, not everyone will! [..]
catweasel on VJCentral.com

it's a great modular programming environment for live video synthesis and experimentation developed by Meso (of Sebastian Oschatz fame, who is, in turn, of Oval fame ); i'm surprised it's got remarkably less exposure on the web than eyesweb, jitter, processing etc.. the simplicity and task-oriented nature of many of its functions, especially the way numbers are handled, will be very welcome for those new to the modular visual programming paradigm.
electronic music 411

Coincidence, fortuity or just the right time? Anyway, here is another "toolkit for real-time video synthesis and controlling physical devices." by meso.net. Where the EyesWeb GUI looks a little bit oldfashioned, vvvv comes like the mother of lauki & co from ixi, minimalistic GUI included :).
soy.de, 01 08 03