3. Dropbox, iPhone/iPad/iPod touch, Free

Need help with organizing? Dropbox allows you to categorize your files and edit documents, automatically add photos, and show off videos from computers, phones, or tablets. Share photos with friends, and collaborate with colleagues like you’re using a single computer. Everything’s automatically private, so you control the settings.

4. Evernote, iPhone/iPad/iTouch, Free

Evernote makes it simple to remember things big and small from your everyday life using your computer, phone, tablet and the web. Create text, photo and audio notes; clip web pages including text, links, and image; and synchronize your notes across your devices.

5. GoodReader, iPad, requires iOS 5.0 or later, $4.99

GoodReader is an excellent top document reader for viewing and navigating large PDF files on an iPhone and iPad. Features include active hyperlinks, which enable users to more easily navigate within the document or launch a linked document or website, PDF Reflow, and powerful file management. A great app for reviewing scholarly articles.

6. LinkedIn, iPhone/iPad/iPod touch, requires iOS 6.0 or later, Free

The new LinkedIn app makes it even easier for professionals to communicate and network online. LinkedIn is the world’s largest professional online network with over 225 million members. Launched in 2003, LinkedIn features executives from all Fortune 500 companies as members.