Wow this looks fantastic! Good open-source tools for design are so necessary [1].
You should probably add Graphite to this list [2]. I'll definitely try Graphite and follow its progress.
Good luck!
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1: https://www.youtube.com/watch?v=lthVYUB8JLs
2: https://github.com/KenneyNL/Adobe-Alternatives
Thanks! I'll open it up to the community to suggest Graphite's inclusion in lists like that one but I'll abstain from doing that myself. I should mention that, at the present moment, the only category we'd appropriately fit under is the Illustrator alternatives. Next year we will be building towards raster editing as our next core competency, but vector editing is the only one we've focused on so far.
Really looking forward to having something with decent vector AND raster capabilites. That niche is currently unfilled unless one wants to run an old version of Fireworks in a VM...