Setting Worksheet: http://www.the-writers-craft.com/support-files/setting.pdf
This is a wonderful way to set up your setting - to make it a living, real sort of world that your characters are existing in, rather than a flat world that is, quite literally, a part of your background.

Planning a Story Worksheet: http://www.coreygreen.com/documents/storyplanningworksheet.pdf
This worksheet is incredibly basic. I would not suggest it for a longer story, but it is a wonderful suggestion for a short story that will help you put down some basic ideas for a main character, some basic plot ideas, and your main conflict.

Scene Outline Worksheet: https://www.creative-writing-now.com/support-files/scene_outline_from_creative_w...
This worksheet is great for every single scene. It reminds us that we shouldn't just have fluff scenes in our longer stories or novels. Every single scene should move the character toward the goal, or draw them further away from it. If you're not an outliner, this may be a good alternative. You could even create your scenes, and reorder them using this method, once they are all written out.

Character Worksheet: http://jodyhedlund.blogspot.com/p/character-worksheet.html
I absolutely love this one! There are things in this that aren't considered on any of the others I've seen before, and so I just find it to be an excellent resource/tool when you are doing character development - especially for writing. It even has you list synonyms to begin with, so you don't have to look for them later.