What is TabLock?
TabLock is a safari extension that provides the ability to lock your tabs, discretely distinguishing locked from unlocked tabs.
If you accidentally try to close a locked tab, TabLock will prompt you, giving you the opportunity to keep the tab open.
"The weak point ... is the squidgy organic bit behind the wheel" - Jeremy Clarkson
Install
To install TabLock, simply download using the link below and double click the file:
Download: TabLock Safari Extension
The source code is available to anyone who wants it under the Creative Commons BY-NC License, as long as you make it clear that I am the original author.
Source: TabLock Source Code (zip)