Dropbox vs. Dropmark vs. Amazon Zocalo

Harness the power of Dropbox. Connect to an account, upload, download, search, and more.

Dropmark offers super simple drag-and-drop file sharing, like a number of web apps before it, but if you want to use it for more you can create presentations, slideshows, and collaborate with others just as easily.

Users can comment on files, send them to others for feedback, and upload new versions without having to resort to emailing multiple versions of their files as attachments.