I’m a cheap guy who doesn’t like to spend money on software. I’m not totally against it, but I have awesomer stuff to spend my money on like diapers, mortgage payments, and $4 gas. I enjoy using free tools or trials offered by the software entrepreneurs I know, but no matter how much I like them, I could live without most of them.

Not DropBox.

DropBox solves a pain I’ve had for years, a pain that never relented or could be relinquished – keeping data consistent across multiple computers. I usually have 2 computers at work (a desktop and a laptop), plus my laptop at home and 2 more desktops. I tried to keep a folder that would sync across all of those machines but I never found a process or product that could do it for me, so I just decided to live without access the files I wanted. I’m not even talking about a 100 gigabyte media library, just things like notes, drafts, some pictures, etc.

I’ve been using DropBox since it came out in beta, and it solved my problem so completely that I had to consciously think to remember what life was like without it (kind of like trying to remember what it was like to install a device driver on Win 3.1). There’s a client app you install that watches your DropBox directory. It then syncs all the files in that directory tree with a copy on their server, and pushes the changes out to other machines where you’ve installed the client app. So far, It’s fast and flawless.

But wait, there’s more! Since it syncs by sending changes to your file instead of the entire file, it also keeps a backup and revision history so you can restore older versions (again, across all machines), like source control for dummies. They also encrypt the files, both in transit and on their servers, so your stuff is safe.

Still not sold? Since copies of all your files are on their servers, you can access them (including revisions) over the web! So if you’re on a computer that doesn’t have the client installed and you just want a couple files, you can just grab them off the web.

It’s sort of funny, but despite absolutely loving the product, I hadn’t written about it yet because I didn’t know what to write. It worked so well that I didn’t even notice it 99% of the time. Have you heard of the book Don’t Make Me Think, one of the great books on designing for usability? (If not, GO READ IT!) If you need to see an example of those principles in practice, try DropBox. I didn’t have anything to write because I hadn’t really used the program – it just quietly served me like a good butler.

They’re still in beta. Once beta is over, there will be small free accounts and paid accounts with more storage. Beta testers will retain a free account that’s bigger than the standard free. I have some beta invites left, so if you’d like to try DropBox (and if you don’t, why the heck are you still reading?), email me and I’ll send you one.