The gap between online and offline is closing more each day, and working with your spreadsheets in a collaborative atmosphere is not a bad reason to try an online spreadsheet editing tool. We've got 14 choices for you for working with your spreadsheets online; most are free, a few aren't, but there's something here for everyone.
BadBlue.com - Features free personal accounts or paid enterprise class services for sharing Excel spreadsheets over the web.
Blist.com - Still in private beta, our Kristen did a detailed write-up on what you can expect from this new spreadsheet app.
EditGrid.com - You can upload your existing spreadsheets, start new ones, and share & collaborate with friends and colleague.
eXxprssoCorp.com - eXpresso allows you to upload your Excel documents for collaboration, and they even provide a plug-in button for the program to ease the upload.
Google Docs - No list of online spreadsheet apps would be complete without the ubiquitous mention of Google Docs. It feels, and looks, a lot like Microsoft Excel and is easily shareable with others.
InputWebWizard.com - Works your spreadsheets with a database so all of your data is stored in a SQL database. System is set to help you develop web apps, but still seems a bit pricey at $499 a month.
JotSpot - Import and Export with Excel, copy-and-paste from Excel, share the documents, even use hyperlinks and attach files.
Numbler.com - A plain, straightforward, collaborative spreadsheet application.
NumSum.com - A more social spreadsheet app where you can leave your work totally open if you choose and allow others to comment on it.
Peepel.com - Import your Excel spreadsheets, work with multiple documents in the same browser window, get an RSS feed of the latest changes to collaborative documents and more.
Sheetster.com - Has the normal online spreadsheet features such as collaboration, but also offers blog embedding options.
Simple Spreadsheet - An open source project that is part of the Simple Groupware Solutions project. Free to use and 100% web based.
ThinkFreeDocs.com - For now, you can not edit uploaded spreadsheets via the site, but they are working on it. Upload what you have and share it.