ProcessWire vs Write Freely: What are the differences?
Developers describe ProcessWire as "CMS with a jQuery inspired content API". ProcessWire is an open source content management system (CMS) and web application framework aimed at the needs of designers, developers and their clients. ProcessWire gives you more control over your fields, templates and markup than other platforms, and provides a powerful template system that works the way you do. On the other hand, Write Freely is detailed as "Minimalist, federated blogging platform". WriteFreely is a beautifully pared-down blogging platform that's simple on the surface, yet powerful underneath. It's designed to be flexible and share your writing widely, so it's built around plain text and can publish to the fediverse via ActivityPub. It's easy to install and lightweight.
ProcessWire and Write Freely can be categorized as "Self-Hosted Blogging / CMS" tools.
ProcessWire and Write Freely are both open source tools. It seems that Write Freely with 1.11K GitHub stars and 51 forks on GitHub has more adoption than ProcessWire with 748 GitHub stars and 226 GitHub forks.