Vorondb.com

https://openbuilds.com/?id=272

https://reprap.org/wiki/RepRap

https://vorondesign.com

https://positron3d.com

https://ratrig.com

https://www.lerdge.com

https://github.com/MSzturc/the100

https://github.com/rolohaun/Rook

https://hevort.com