I'm resigning soon, any suggestions what to build on my own?
imp: Like others, I'm not really going to answer the question you asked, but instead offer unsolicited advice on the decision you've made.Being at home doing nothing is fun, but realize that you'll be at home working your ass off.  If it was the "doing nothing" part that was most interesting to you then a startup may not be as much fun as you're currently anticipating.Also, I don't know what your financial situation is, but "several months" of savings doesn't sound like a whole lot if you're just starting from scratch now.  It could likely take longer than that to get ramen profitable.Just some background, I was in a somewhat similar situation last year.  The new startup/project I quit my job for was something that I had been working on part-time for 3 years before that.  Even with that head start, my initial revenue was only about 10% of what I had projected/hoped for.  It's still steadily growing and could be ramen profitable in the next year or two, but I just wanted to share my experience to let you know that financially it could be harder and longer than you think.  It was for me.