Sync services have become increasingly popular and more necessary in recent years. From the file-and-folder based system of Dropbox and Box.net to the “Offline access? Who needs it?” approach that Google Apps adopted, a large number of companies are trying to solve the multiple device problem.

WorldDesk, a relative underdog compared to the likes of Dropbox on the synchronization end and VMWare on the virtual machine market, is today announcing its “SlackerPack”, a suite of applications compatible with the company’s  platform. Downloading the software via the SlackerPack link installs several of those compatible applications, including Spotify, TweetDeck, VLC Media Player, and more. The service is currently in beta, and access is free for all users until a 1.0 release version is shipped, when it will introduce multiple price tiers (that have yet to be determined) based on users’ needs.

Menlo Park-based DeskStream acquired WorldDesk in January 2012, taking the company’s name and branding when the deal was finalized. The company is currently backed by a number of angel investors, including Lough Shore Investments, and CEO Rao Cherukuri says that the company will most likely seek external funding in 2013.

Instead of syncing only one type of data, WorldDesk backs up a user’s entire desktop and compatible files to its servers, making them available on any compatible device. While it’s currently available only for Windows XP and Windows 7, the company has in-house demos on OS X, Android and Linux. The company will accelerate those in the fourth quarter, Cherukuri says.

WorldDesk has seen interest from enterprise companies, Cherukuri says. By using the service, companies can keep employees’ computers in sync and make them work at any time put an end to “See, I would have that report ready, but it’s on my work computer…”

The company recently introduced a 64-bit version of its software and is now announcing integration with over 50 applications in its SlackerPack. Boasting support for Spotify, Angry Birds, TweetDeck, and more, the software promises to keep these applications in sync and readily available across all of a user’s devices. Announcing compatibility with a suite of software with the term “slacker” in the title might lessen enterprise companies’ enthusiasm about the service, but should make it more appealing to the mainstream consumer.

It’s easy to see the appeal of a sync service that manages nearly every type of data. Anyone that uses Spotify for music, Dropbox for storage, Google Docs for collaboration, Backblaze for backup, and who knows how many other services will read “fully featured solution” and breathe a sigh of relief.

Unfortunately, being restricted to Windows 7 is a severe handicap in a world dominated by iOS and Android. While Microsoft has sold over 525 million copies of Windows 7 (and the actual number of users may be much higher if pirates are thrown into the mix) not supporting mobile operating systems limits the software’s utility to the increasingly marginalized desktop.

Not supporting those operating systems – not to mention OS X – as a bare minimum is a glaring oversight. Given the quick rate of evolution and the constant iteration of already-established solutions, “soon” may not be soon enough.