Sanako might be a bit more popular than DIY.org. We know about 1 link to it since March 2021 and only 1 link to DIY.org. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
And the organization in question (it changed a lot since 2018): Https://diy.org/. Source: about 1 year ago
Haven't tried them personally, but had run across https://sanako.com/ and https://withprimer.com/. Looks like primer is more for home-schooling though. Source: almost 3 years ago
Primer Rooms - Live, interactive experiences with kids around the world
Traverse - Barcoding solution for small to midsize businesses
Prisma LIVE - A live learning platform purpose-built for kids
Microbit - BBC's handheld, programmable computer given free to UK kids
Creojam - DIY marketplace, connecting makers and businesses
Personal Robots - Discover a new toy robot every day