To edit a file in Dropbox, generally you may do it manually. First, you download it and then edit it offline and then uploaded. It is certainly less cumbersome and takes a long time.
Armed with a web application called Write-box, you can perform editing documents online. The trick is quite simple, and free. You do not need to register by entering your email or any data on this web application. You only need to login with your Dropbox account, and eventually your Dropbox folder will automatically be accessible through the application site.
In addition to opening a file it online, you can create a new file and save it in the Dropbox folder as you want. And, each time you make changes to the Dropbox folder, then you will see a notification in the System Tray in the lower right corner.
Unfortunately, this one is a web application only supports text file format. So, if you save a file with the. Doc or the other, then you will not be able to do it with this application Write-box. However, good as this application has a minimum. So even if you have internet access that is not too fast, you will not be difficult to open the site this one.