Extensions by Yukihiro Marui

Library Check for Zotero – Prevent Duplicates

⚡ Productivity

Check instantly whether the paper you're viewing is already saved in Zotero. A simple tool to prevent duplicate saves.

Pick Engine – Route Your Searches

⚡ Productivity

Randomly routes address-bar searches to your own search engines by weight, with custom groups. Runs locally; no external relay.