Formula Sheet – All Your Formulas In One Place
http://formulasheet.com/

Features include: a) Search for formulas – Search Wikipedia and FormulaSheet for formulas. Instantly get the image or copy the formula to LaTeX or MS Word 2007+; b) Upload formulas – Upload your LaTeX file with a single click. They will find and extract all of your formulas; c) Create formulas – Create formulas from scratch using our intuitive equation editor. Add a title and description to your formula; give it tags so that you can find it again later; d) Store all your formulas in one place – All your formulas will live happily in the cloud, accessible from anywhere with an internet connection. Using our web app, the formulas can be organized into lists, or combined with text and diagrams to create sheets; e) Share your formulas – Share formula lists and sheets with other users, with the entire web, with university classmates or with work colleagues; and f) Render your formulas – Render your formula, list, or sheet as a .pdf document, as a .tex file, or as a .png image. Customize the font, size, color, and image resolution. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.