Xfig is open source and has barely changed since 1991, but I don't think that's a feature. Learning to use updates to a UI is relatively cheap. Having a bunch

Xfig is open source and has barely changed since 1991, but I don't think that's a feature. Learning to use updates to a UI is relatively cheap. Having a bunch of tools that are outdated is expensive. Inkscape is great for what it is, but it could definitely use a well thought out interface refresh.