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Crossover is made by Codeweavers who are the devs of Wine.

> who are the devs of Wine.

they employs many devs of Wine (including the project lead, Alexandre Julliard). but technically Wine is still an independent open-source project, and has many contributors from outside Codeweavers.

They're also responsible for Proton in collaboration with Valve. Codeweavers CTO has been project lead of Wine for three decades.

> responsible for Proton

Part of Proton only. Proton is a mix of various projects. Esync, Fsync, Wine, DXVK, and more...

> Codeweavers CTO

Yes Julliard is very famous and key to the project

> Proton is a mix of various projects

They didn't magically get bundled together. Proton still has a substantial amount of engineering behind it.

I think the point was that there is way more people involved in Proton that the people/work coming from Wine, not to trivialise the amount of work integrating a bunch of projects take.

Yes. Wine for one never had a high performance DX11 rendererer and DXVK was a revolution for gaming.

I assume Esync and Fsync will not live much longer, now that NTSync is supported by the both Wine 11 and the kernel 6.14.

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