I'm not retired yet, but getting close enough to start comparing my current living expenses vs. anticipated retirement living expenses. I've been searching for a good (and free) online budget calculator or planner. I haven't found one that I like yet. I want something that is flexible enough to add my own expense categories and organize it in a way that makes sense for me. I started doing one myself in Excel, but I'm not at all proficient at it and I just got frustrated. I figured I don't have to reinvent a wheel that I'm sure has already been invented. Any recommendations?