Edit:
A Chrome Web extension is available for this now!
TamperMonkey Script: Job Application Tracker
I created a TamperMonkey script that adds application tracking to the job table. It might be useful for other job seekers managing their applications.
Features:
Adds "Applied" checkbox column to each job row
Highlights applied jobs in green
Persists data locally across sessions
Auto-marks when clicking application links
Links:
GitHub Repository
Install from GreasyFork
The script works exclusively on this repository and stores data locally (no external servers). I'm considering creating a Chrome extension version for easier installation.