FOSS applications cost nothing.
Reality: Vendors do sell open source applications. While these systems may ultimately present cost savings, much depends on maintenance, implementation, and other cost factors.
Misconception: FOSS applications are too risky for mission critical uses.
Reality: Open source software is relied upon for mission-critical servers, enterprise applications, and embedded devices.
Misconception: FOSS isn't ready for the enterprise.
Reality: In fact, there is a growing segment of enterprise applications that are free and open source software. Some mature applications are visible in TEC's evaluation centers.
Misconception: There's nobody to call when you have a problem.
Reality: Most companies providing FOSS applications model their businesses around providing support, implementation, and customization services.