When GitHub CEO Thomas Dohmke left the Microsoft-owned company in August of 2025, he said he did so to return to his startup roots. Now, after a few months of development, he is launching Entire, a new open-source developer platform that reimagines what collaboration between developers and agents could look like if built from scratch.
Entire is backed by a $60 million seed round, the largest in developer tools history, led by Felicis, with participation from Madrona, Basis Set, and M12, Microsoft’s venture arm.
That’s an outsized round by…

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