How I Built a Tab Manager Extension for Firefox (Zero Dependencies, MV3)

Two new Firefox extensions address specific browser challenges. Tab Manager Session Saver allows users to capture open tabs as named snapshots, restore them instantly, and manage duplicates without requiring an account. Meanwhile, NightOwl provides a smart dark mode alternative to heavy extensions that slow rendering or basic ones that invert image colors. Both tools focus on efficiency and user experience, offering lightweight solutions for session management and eye strain reduction within the Firefox ecosystem.