In early 2014, Chris Granger et al raised 2.3M in a round led by Andreessen Horowitz with the mission of democratizing programming.
They spent their first two years building 30+ prototypes of graphical programming tools. Most of their prototypes enabled users to build interactive visual applications, such as TodoMVC or FourSquare.
Two years in, they released Eve v0.2 as the first prototype available to the public. It was a browser-based literate programming environment. Despite all of the graphical programming prototypes, Eve v0.2 was a text-based language. It was inspired by Dedalus (from the BOOM Lab), which in turn is based on Datalog, a subset of Prolog.
They continued iterating on Eve v0.2, and blogged about v0.3 and v0.4, but never released hosted versions of either. Eve shut down in early 2018 after failing to find an acquirer.
Thanks to the Eve team: Chris Granger, Corey Montella, Josh Cole, Rob Attorri, Eric Hoffman, and Jamie Brandon. You were an inspiration.