I Scanned My MacBook and Found 127GB of Developer Junk. Here's What It Was

Last week I ran MegaCleaner on my development MacBook for the first time in months. It found 127GB of junk. Not "maybe junk" — actual build artifacts, stale caches, and orphaned data from tools I use every day. My 512GB drive had 47GB free. After cleaning, I had 168GB free. That's a quarter of my entire disk reclaimed. Here's the full breakdown of what was hiding on my machine. The Scan Results MegaCleaner scans 29 categories (21 developer tools + 8 general system categories). On my machine, alm