Earlier this year Microsoft quietly removed the app sidebar from Edge. That was the one feature keeping me there, so I switched to Vivaldi. It has the sidebar, it is Chromium-based, and it is surprisingly configurable.
The problem is I run two Vivaldi profiles. One for work, one for personal. Every time I tweaked a theme or changed a keyboard shortcut in one profile, the other would fall behind. Vivaldi does not have built-in cross-profile sync for settings, so I ended up copying stuff by hand.
I spent a "telling Claude to write Rust" weekend building a small Tauri app to handle this. It reads the Preferences JSON from one profile and copies specific keys to another. Nothing leaves your machine. No accounts. No cloud. Just file copies with a backup first.
I figured if I needed this, someone else probably does too. Especially with how many people are switching to Vivaldi right now.
Martin Smith