This has the potential to save you hundreds of dollars annually on security software. I'm running it myself on five machines, and it has performed quickly, quietly, and efficiently on every one of them.

Designed to replace Microsoft Project (which, incidentally, sells for a thousand bucks), OpenProj offers a full roster of project-management features: Gantt Charts, Network Diagrams, WBS and RBS charts, Earned Value costing, and so on.

Plus, it's cross-platform compatible (Windows, Mac, and Linux), unlike the Windows-only Project.

You spend enough money on human resources without paying for HR software on top of it. OrangeHRM is a complete human-resource management solution designed for SMBs. It includes modules for things like personnel information management, leave management, time and attendance, and benefits. There's even a self-service module employees can use to update their own information. This is really a killer tool for companies looking to manage HR on the cheap.