Justbeamit lets you transfer larges files to your friend in a peer-to-peer manner. To start, simply drag-and-drop the file you wish to transfer to the browser window. You will then be given a URL that you can send to your friend to download the file. The service acts as a gateway between you and your recipient, so you have to stay on the page while the download is taking place, but you will be able to monitor the progress while it is happening.
RAW lets you upload tabular data in various text-based formats (CSV, TSV etc.) and create instant graphical visualization of your data. Visualization types include Alluvial Diagram, Bump Chart, Circle Packing, Circular Dendrogram etc. The final output can be exported as SVG or PNG.
Method Draw is a browser-based vector image editor. It is able to open SVG files and import most bitmap image files, as well as export the final image to PNG. Most basic vector editing functions are available, including lines, shapes, paths, text etc.
5iler (pronounced "filer") is a minimalist notepad that gives you only 5 pages with different colours. The idea is to keep everything manageable by limiting your options, hence only 5 pages. It saves automatically to the browser's local storage, but you also have the option to syncing to your Dropbox account. Various keyboard shortcuts are available to apply formatting and create headers, lists etc.