Based in the U.K., with a U.S. headquarters in downtown Manhattan, AppSense has racked up more than 3,000 customers worldwide since its founding in 1999, including 18 of the top 20 banks. With its customer list expanding, AppSense has also grown its total workforce from 180 to 450 employees in the last two and a half years. A third of these employees are in the U.S., which now makes up half of the company's business. "We're just about to move into Latin America and into Canada," noted Antill, adding that the firm is also expanding its presence in areas such as Scandinavia and Eastern Europe. AppSense is also racking up an impresssive list of partners, which includes HP ( HPQ), IBM ( IBM), Cisco ( CSCO) and Microsoft, along with VMware and Citrix. "We work within the ecosystem of VMware, or Citrix and Microsoft," explained Antill. "We've worked with them for years - we sit on top of their stack." With the tech IPO market getting back into gear after a brief Facebook ( FB)-induced hiatus, TheStreet asked Antill whether AppSense will take eventually take the public plunge. "Raising money on the capital markets is one option," he replied, but noted that AppSense hasn't "ruled anything out or anything in." "We will look at all options to enable us to continue to grow, to make ourselves more relevant, and to build out our proposition," he added. "It's important to us that we continue to look at making further acquisitions." Earlier this year, for example, AppSense acquired RAPsphere, which develops mobile information management solutions, for an undisclosed fee. 451 Research analyst Chalmers would not rule out the possibility of AppSense becoming a public company one day. "If they execute, they can have a crack at an IPO," she said, but warns that AppSense is in a competitive market. "Citrix and VMware have some products in this space," she added, noting that desktop management specialist Res Software is another rival. AppSense's technology is "really interesting and well-engineered," according to Dan Kusnetzky, founder of technology research and consulting firm Kusnetzky Group. The analyst, however, warns that the startup has a marketing challenge on its hands. Virtual Computer, which is now part of Citrix, and Moka 5, seem "vaguely similar" to AppSense, he said, but noted the products' technical underpinnings are different. " AppSense's challenge is making what they're doing distinguishable from what the others are doing," he told TheStreet. "And proving that what they're doing is better, cheaper, faster, smarter." --Written by Nathalie Pierrepont and James Rogers in New York. Follow @nrpierrepontFollow @jamesjrogers >Contact by Email. >To submit a news tip, send an email to: firstname.lastname@example.org. Check out our new tech blog, Tech Trends. Follow TheStreet Tech on your wireless devices.