AlternativeTo excels at showing you options, however it doesn't really tell you why one option is better/worse than another. It lists options by the number of likes it has received, but to directly compare the options is relatively hard to do.
I visit alternativeto.net regularly, it's a good starting point to know which freeware I want to download, there are filters available. The data is community crowdsourced.
The ability to filter by platform and license means that you can easily filter out software that you can't use. More specific filters and sort orders are also available.
AlternativeTo makes it easy to quickly find stuff. The lists are organized by likes which floats the best content to the top, and helpful tags warn you of undesirable attributes (such as the product being discontinued or if it includes bundleware).
The website offers a lot of information on the apps for download. Aside from a summary of what a certain app does, the website also offers a bunch of other information like platform compatibility, the license of the app, install instructions and many more. Because of this, it should be easier for users to decide if an app is for them or not with just a quick look.
You can easily update most of your programs, especially freeware. It recognizes the apps installed on PC and automatically searches for the latest versions in a database. It lets you choose to update programs with one click.