A web catalog is a type of website similar to a webshop, where groups and categories are available. You can organize products into different groups and categories, but the main difference is that there is no option to add products to a shopping cart. Instead, there is a button for a contact form, encouraging direct interaction if visitors are interested in a product.
You can add prices to the products, suggest promotions, display different prices per login or customer group, or even hide prices altogether. All functionalities of a webshop are present, but without the step of adding items to the shopping cart and completing the purchase.
These functionalities are also ideal for organizing and presenting projects. Each project can be considered as a product, with photos and text added to provide visitors with a comprehensive overview of your work. Of course, there is also a button to the contact form so that visitors can directly get in touch with you for their project.