[I recently made a post in the OT about this, but I figured it might be good as a top-level post for add'l attention.]
After writing Planning 101, I realized that there was no automated tool online for Murphyjitsu, the CFAR technique of problem-proofing plans. (I explain Murphyjitsu in more detail about halfway down the Planning 101 post.)
I was also trying to learn some web-dev at the same time, so I decided to code up this little tool, Plan-Bot, that walks you through a series of planning prompts and displays your answers to the questions.
In short, you type in what you want to do, it asks you what the steps are, and when you're done, it asks you to evaluate potential ways things can go wrong.
I set it as my homepage, and I've been getting some use out of it. Hopefully it ends up being helpful for other people as well.
You can try it out here.
And here is it on GitHub.
I'm still trying to learn web-dev, so feel free to give suggestions for improvements, and I'll try to incorporate them.