1- Dropitto Me
This a great web tool that allows users to securely upload files to Dropbox.Once registered with DropitTome, you 'll be given a password protected link you or others can use to upload files to your Dropbox account. This service is free.
This is another awesome app that I use on my MAC Book Pro. It is a simple software that allows you to sync any file or folder on your Mac with Dropbox.
3- Backup Box
Feel like moving from Dropbox to Box? Or from Google Drive to SkyDrive? Use Backup Box to make the process a snap!
Wappwolf is focused on deconstructing the barriers of the Cloud. By connecting your Evernote, Facebook, Flickr, and other web services / apps to Dropbox. Drag & drop files into a predefined folder on Dropbox and automatically convert and sync to your favorite places.
This is a form builder that allows you to upload your forms and send them straight to your Dropbox account.
6- URL Droplet
URL Droplet allows you to upload links straight to your Dropbox folders. All you need to do is take a link (this especially works well if the link leads to a PDF or similar document) and paste it into the URL Droplet form.
When you don't have access to Dropbox, it comes in handy to have an alternate way to upload files. If you create an account at SendToDropbox.com, you can send files to a custom email address as attachments. The files will automatically appear in your Attachments folder in Dropbox.
8- Host Webpages
Want a website, but don't want to pay for a domain? Want an online portfolio, but don't know HTML? Dropbox can help. By using services like DropPages or Pancake.io, you can create a small and simple website with minimal effort. With Pancake.io, all you need to do is save plain text files in Dropbox, and you can edit them at any time the same way. DropPages is a little bit more complex, letting you add themes and custom URLs. Both services allow you to use Markdown or HTML.