Zen Browser

Zen Browser is an open-source, Firefox-based browser focused on calm design and privacy, built by a community of developers and designers led by its creator, Mauro V. It organises tabs into workspaces, hides the tab bar in a compact mode until it is needed, offers Glance for jumping between your most used tabs and shows two tabs side by side in split view, with theming and a gradient generator. Its core team includes contributors who handle macOS builds, theme features, code signing and notarisation, and the project is kept alive by sponsors and donations.