Very cool, this is on my own TODO list of things I would like to build for myself at one point. I just posted it on HN here: https://news.ycombinator.com/item?

Very cool, this is on my own TODO list of things I would like to build for myself at one point. I just posted it on HN here: https://news.ycombinator.com/item?id=6622332 https://news.ycombinator.com/item?id=6622332 Can you give some more details? Can I easily get the data and safe it on my disk? Can I add further metadata to each contact? Is the software Open Source? Will there be plugins/extensions such that when I'm on Facebook or in GMail or whereever, that it can easily show me more contact details? (A bit like rapportive for GMail.)