As the person typing in that video, I can confirm that it is tidal. Actually I am not aware of anyone else getting as far as using tidal in performance yet, hopefully soon.
Meta ex have played at a couple of algoraves using overtone.
At the algorave in Sheffield there was
* Yaxu - tidal
* Curious machine - game of life cellular automata and a visualiser on the SNES
* Sick Lincoln - SuperCollider mostly pre composed
* Shelly and some Mandelbrots - SuperCollider as well, live coded
* Section 9 - ixi lang
* Luuma - loads of crazy stuff built in c++, I think running on FPGAs
Meta ex have played at a couple of algoraves using overtone.
At the algorave in Sheffield there was
* Yaxu - tidal
* Curious machine - game of life cellular automata and a visualiser on the SNES
* Sick Lincoln - SuperCollider mostly pre composed
* Shelly and some Mandelbrots - SuperCollider as well, live coded
* Section 9 - ixi lang
* Luuma - loads of crazy stuff built in c++, I think running on FPGAs
Check http://algorave.com and http://toplap.org for info, videos and links