Gladinet is free windows application that allows you to access files stored on cloud services like Google Docs, Picasa Web albums, Windows Live Skydrive and Amazon S3. It mounts all these accounts as virtual drives in windows so that you can add, edit, remove documents from these services as local folders. You can mount and unmount these virtual drives with ease.
Download Gladinet app from here and install it. While installing select the storage services to mount as virtual directory.
Once created you can open, add or edit files from the windows explorer just like any other local file. For example you can open Google docs file in MS word and modify it and save it, it will upload the latest version to Google Docs. You can browse, add and remove photos stores in windows skydrive or picasa web albums using gladinet as local files. If you work with more than one windows PC, you access files from all the PCS from a single virtual drive.
To test i have created a folder in Windows skydrive and uploaded a pic to it and also uploaded a pic to the existing folder, both of them appeared immediately online.
Gladinet runs in the system tray, you can access by right clicking the icon, from here you can manage all your virtual directories, mount new ones and unmount the existing ones.
Gladinet is a powerful tool for managing all your cloud files from your desktop using familiar windows explorer. If you use any of the online storage services this application is quite useful.