AntiFirewall is a simple, easy to use a firewall for Windows that allows you to block and allow any programs' internet access on demand. This is useful for if you think you might be at risk for some type of network attack, or just wanting more secure and granular access to the internet that you use every day. It works on Windows 95 and lower. The latest version of the program released is named 1.10 and was released back in 2003. Nonetheless, the program still gets the job done for what you need, granted that you use a pretty old OS. With an OS that old, it's definitely worth keeping an eye on security so something like this is extremely useful. I'd highly recommend it to anyone that doesn't know too much about computers, as the ease of use puts it ahead of many other similar programs that I've tried throughout the years. Also, the program has had upwards of 5000 downloads thus far, showing it's relative ubiquity in the small community that still uses old OSs to this day, though the program has been around for a good while of course.
AntiFirewall comes out ahead of a lot of modern firewall solutions in its minimalism. It doesn't need to have 40 different features for every single edge-case, because it's made to block and allow programs' access to the internet, and that's pretty much it. If you like minimal programs, this is probably the most fitting option, as the rest of the programs in this space are bloated with random features that most people never use that they are trying to monetize at any cost. I do hope that more programs like this one are created for the purpose of doing one thing and doing that one thing very well because bloat is a plague on modern software.