CrossLoop is a smooth, free, and lightweight screen- and file-sharing program, formerly available only for Windows users. Earlier this month, a Mac beta version debuted offering the same features. Besides extending the feature set to Macs, the PC and Mac versions can talk to each other and share across platforms.

For those unfamiliar with the program, which uses 128-bit encryption, you're given a unique and random 12-digit access code each time you start the program. You can then share your username and code to allow somebody else to access your computer, or input another user's info to access his computer. Guests can use any app and save files on your computer, as if they were sitting in front of the machines. No router configuration is required, either. CrossLoop bases its business model on connecting freelancing tech support with those in need of assistance. It doesn't support multiple users, so it's not a good platform for group presentations.

In testing the Mac beta with CrossLoop co-founder Mrinal Desai, I noticed a virtually identical experience to the stable PC version. There were some resolution and image quality issues, which Desai assured me had more to do with bandwidth than the program itself. Although CrossLoop defaults to autodetect your pipeline, you can force it to use faster connection speeds, resulting in lower resolution, or slower speeds for higher quality images.

Although I didn't encounter any bugs when testing the beta on my own, Desai pointed out to me one major problem: dragging and dropping files to share causes CrossLoop Mac to crash. Browsing directly to the files through the program to share them causes no problems.

If you've used CrossLoop for Mac or Windows, please share your opinions in the comments below.