SOCIAL APPS
- Facebook - the official app for Facebook
- Twitter - the official app for Twitter
- Linkedin - the official app for Linkedin
- Foursquare - share and discover local places you visit
- Hashable - to log new biz contacts
- Plancast - view info on events to attend
- Posterous (or Tumblr) - easy on the go blogging
- Meebo - for AIM or Google Chat
- Whatsapp - free international text messaging (to app users)
FOOD
- Yelp - view restaurant recommendations
- Menupages - view restaurant menus
- OpenTable - make restaurant reservations
- Fooducate - search food health facts by barcode
- Foodspotting - share pictures of dishes you eat
MUSIC
- Pandora - free music streaming
- SoundTracking (or Shazam) - identify music you're hearing
- Vevo - play music videos
NEWS
- Reeder - read Google Reader RSS feeds (offline too)
- Instapaper - read webpages saved for later (offline too)
- Newser - catch up on breaking news quickly
- NYTimes - read NYTimes.com articles on the go
PHOTOGRAPHY
- Instagram - snap and share stylized photos to social networks
- Snapture - advanced camera features like continuous shooting
- PS Express - on the go photo editing
- Photosynth (or 360) - capture complete 360 degree panoramas
- Flickr - upload and view photos to Flickr
SPORTS
- Sportacular - follow sports games and scores
- WatchESPN - stream ESPN live anywhere (if a member)
ENTERTAINMENT
- Netflix - stream movies and TV shows (if a member)
- IMDB - look up information on movies and TV shows
- Fandango - buy movie tickets from your phone
- IntoNow - identify TV shows by a few seconds of audio
- GetGlue - share and discuss movies and TV you're watching
SHOPPING
- PayPal - send people payments via your phone
- Mint - keep track of your bank accounts on the go
- Shopsavvy (or Google Shopper) - look up product costs and reviews via barcode
- Groupon - purchase and redeem neighborhood deals on the go
- Square - pay without credit card at (some) neighborhood shops
TRAVEL
- Mapquest - hands free driving directions
- Tripit - keep track of your plane, hotel and car reservations
- Google Earth - search across a virtual earth
- GateGuru - look up restaurants in airports
- Hipmunk - look up flight times on the go
- Weather Channel - look up the weather report
- Google - mobile search (by voice) and links to Google apps
- Mobile Mouse - control your mac trackpad by phone (w/ plug-in)
- QuickMark - scan QR codes
- Box.Net - 5 GB of free cloud file storage
- DropBox - sync files between cloud, computer and phone
- Evernote - record and sync multimedia notes, has built in OCR