As a developer who spends 10+ hours a day in a browser, I've become selective about my Firefox extensions. Here are five that actually stay installed:

1. uBlock Origin — Ad/Tracker Blocking

The gold standard. Blocks ads, trackers, and malicious scripts. Zero configuration needed.

2. Firefox Multi-Account Containers

Isolate work, personal, and testing sessions in separate "containers" with different cookies. Essential for testing OAuth flows.

3. Vimium-FF — Keyboard Navigation

Navigate tabs, links, and pages entirely from keyboard. Steep learning curve, massive productivity gain.

4. Tree Style Tab — Tab Management

Vertical, tree-structured tabs for managing 50+ tabs without losing your mind.

5. Weather & Clock Dashboard — New Tab Replacement

I built this one myself.…