If you're a solo user on Windows looking for a modern file management experience, go for Files. Its dual-pane layout and tagging system provide features that Windows Explorer lacks, and being open-source ensures you're not locked into proprietary software. However, if you're on multiple platforms or need advanced features like scripting or FTP support, Files won't meet your needs.
For teams or individuals focused on design and prototyping, Penpot is the way to go. Its real-time collaboration and component-focused approach make it ideal for developers and designers working closely together. However, if you rely heavily on Figma's extensive plugin ecosystem or need a more polished tool, you should consider alternatives, as Penpot's smaller ecosystem may limit your design workflow.