Yes, I've bought every alleged outliner since and nothing compares. What's amazing is that Ecco had 100% reliable cross-device syncing in 1990s, both PC-PC and PC-PalmPilot. So it has enough metadata in the database.
TreeSheets (http://strlen.com/treesheets/) is an open-source cross-platform codebase (wxWidgets) with fast graphics, since it was designed by a game developer. That's one possible starting point for cloning Ecco.
TreeSheets (http://strlen.com/treesheets/) is an open-source cross-platform codebase (wxWidgets) with fast graphics, since it was designed by a game developer. That's one possible starting point for cloning Ecco.
NoteLynx on Android has the ability for an item to be in two places within the outline, https://www.appbrain.com/app/notelynx-pro-outliner-mindmap-w..., as does Mindscope on iOS, https://itunes.apple.com/us/app/mindscope-thought-organizer/...