Visix Vibe. It was a "WYSIWYG"-type visual programming environment for .. Java.
It had its own cross platform UI and other frameworks too, so you could "write once in Java, and ship on all the things" .. well theoretically.
It got abandoned too soon. But it was quite fun to build apps with it for a while, almost Delphi- like. I always wonder if it went open source, if things would have been different vis a vis Flash, etc.