I don't remember that browser though, aren't you mixing it with type library navigation tool from the Windows SDK?
I ended up doing some digging after your comment, and figure 2 is the one I remebered, yours is also there as figure 1.
https://learn.microsoft.com/en-us/archive/msdn-magazine/2000...
Note C creators didn't kept following up on ISO, Plan 9 and Inferno lacked C++ support, and they rather came up with their Java competitor in Inferno with Limbo, and Dis eventually also supported Java.
Current JRE/JDK's run it in a bad way (threads get borked) since Java 1.6/OpenJDK 7 I think. Now, if Inferno supported Java 1.4 or something close to the old Kaffe+Jikes it would be really nice to get legacy stuff working.
https://scispace.com/pdf/using-inferno-to-execute-java-on-sm...
I also assume it wasn't something they cared that much about, as I could not find the original source code on the Inferno open source repo.