In 2020, faced with the cancellation of our flagship Haystack US conference due to the pandemic, we worked with the Plain Schwarz team to combine our event with two others (Berlin Buzzwords and MICES) into a week of online talks, workshops and discussions. In only a short time they put together a complete online platform for the event including live streaming solutions and during the event worked tirelessly to make everything run smoothly. Their capacity to adapt to what was a difficult situation very much impressed us all.

― Charlie Hull | OpenSource Connections