This could be the most high-end free software ever: it's the very tool used to render the images you see in Pixar's movies. That's because RenderMan was developed by Pixar in-house for that purpose, but became free for non-commercial use. It's not going to do you much good without other software such as Autodesk's Maya for creating 3D models. But budding artists and filmmakers will want to take note. You'll need a 64-bit system to run it.
Blogging can help you attract more traffic to your website in a lot of different ways. Create content that people actually want to read to make it work. Make sure you cover topics that your target audience is interested in. You can then promote these content pieces on social media and elsewhere. Having a blog will also give you more pages on your site that Google can index.
If you use a desktop email client like Outlook, Thunderbird, or even Windows Mail, you're probably not getting as much spam-fighting power—especially with POP3 email accounts. Stick SPAMfigher on the system—it works directly with Microsoft to make it as tough against spam as possible. (The Windows version is totally free for home use; the Mac version is only free for 10 days.)
Online marketplaces and listing sites can produce a steady stream of leads. While the effectiveness of directories varies by industry, marketers can get a jump on their competition by optimizing a listing or being the first to get listed. For example, in the digital agency industry, an agency has several different places to list their services: Digital Agency Network, Clutch and Agency Spotter are all collections of agencies.