Zencast

Zencast puts every tab, space, bookmark, history entry, command and Zen setting one search away behind Ctrl+K. It is also a template: fork it and let a coding agent reshape Zen, or any Firefox-based browser, from the inside.

• Prefixes. @ tabs, / commands, # bookmarks, $ settings, * mods and ! history keep a search to one kind.
• Open anywhere. Alt+1…9 aims results at a space and Ctrl+1…9 at a container.
• Hold to reveal. Holding Ctrl or Alt marks a letter on every result, so any row runs from the keyboard.
• Sessions and cleanup. Every run of Zen is saved as a session, and week-old tabs close into a dated bookmark folder with undo.
• Looks. Five themes, from the default to candy, paper, pink and terminal.

TypeScript, Firefox chrome scripting and Sine, with one-command installers for Linux, macOS and Windows.