Software comparisons, alternatives, and tool decision notes.

How to Fix Cloudflare 521 Error with Firewall Settings

If you see a 521 Web Server Is Down error when visiting your site through Cloudf...

Fix Nginx 403 Forbidden: Permission Denied Errors

You're trying to access a site served by nginx, but you get a 403 Forbidden ...

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

How to Use Chrome Task Manager to Find Memory Hogs

If your computer starts slowing down, Chrome's built-in Task Manager can help you find which ...

How to Validate Nginx Configuration Before Reload

Reloading nginx with a broken configuration can take your site down. The safe way is to test the ...

Fix Windows Explorer Keeps Restarting in Safe Mode

If you boot into Safe Mode only to see Windows Explorer crash and restart over and over, the prob...