14-web-apps-for-your-portable-office

Lifehack.org had a post with some applications you can use when abroad and using your laptop.
Here comes there content:

Online Office Suites
Office suites are the nerve center of the office (funny that) whether it’s a portable one or the one tethered to a desk and a floor. There are two particularly popular office suites that are web-based, both of which have zillions of zealous fans.
Google Apps offers email, documents, spreadsheets, notebooks, and more, attached to your own domain name. There are also personal versions if you don’t own a domain, such as Gmail and Google Docs.
Zoho is much like Google Apps, though many proponents say it has a far richer feature set than Google. Features aside, the range of apps is far more diverse - it has offerings for invoicing, databases, project management and even a wiki.
Organization
It goes without saying that we at Lifehack are obsessed with organizing, so these are some of our favorite web apps–you should get obsessed too, since working on the move can mean being disorganized for many workers. Take a look at these:
Backpack offers project management capabilities, as well as task management and note-taking.
Evernote offers a cross-platform desktop and web-based app for taking notes, which you can tag, share and sync between all of your devices. It can even make the text of an image searchable - great for taking a snapshot of the whiteboard at the end of each meeting.
Remember The Milk is a fantastic task management web app. It’s got all the power you’ll need to make your task management system work in a web-based setting, with a fantastic blog and team behind it making it better all the time. Check out this post if you want to improve your Remember The Milk setup.
Business
Managing your invoicing and your money is a painful necessity for not just freelancers and web workers, but practically everyone (well, perhaps not invoicing, but money in general). There are some great web apps that make these tasks easier.
Blinksale is a fantastic invoicing web app, starting with a free option and scaling up depending on how much you need to use it. Highly recommended.
PayPal is a must for any web-worker. You just can’t get by without a PayPal account these days unless you shun the internet all together. If you don’t want to fork out for Blinksale, PayPal’s invoicing is pretty good, although it doesn’t let you apply a discount to the invoice, which is often annoying as it means (gasp) manual calculations!
Harvest is a web app for time-tracking, making it easier to calculate your fees and write up an invoice (with invoicing built in, if you find it easier to track time and invoice from the same app).
Communication
Basecamp is a web app that endeavors to improve your project communication and collaboration, allowing you to make to-do lists, share files, track time (as part of a team, rather than for freelance invoicing purposes), and schedule milestones.
Campfire is another one from the makers of Basecamp that we here at Lifehack use for collaborative meetings. Imagine the chat rooms that typified the net in the nineties, repurposed to accommodate business and creative meetings
Meebo is handy if you need to chat with clients, colleagues or business partners while out and about on AIM, Yahoo!, Google Talk or MSN instant messaging networks and you don’t want to download anything. It’s a web-based client to handle them all.
Diversions
Twitter makes for a good diversion since it’s not intrusive, so you can have some social fun while not allowing the application to take over in such a distracting way as instant messaging. It still can get distracting, but there’s an order of magnitude between Twitter and something that beeps and flashes like MSN or Skype.
Shockwave is still around– It hasn’t, and currently has some excellent word games that can both “warm up” your mind .
YouTube is a site you already knew about, but when it comes to taking a break, nothing beats a surf around this site. Especially if you want a totally passive break, as both Twitter and Shockwave require a certain level of interaction.