greasemonkey / tampermonkey scripts
- Alt+Num_Extended_Char_Entry.user.js -- allows entry of Alt codes on keyboards without a numeric keypad (more info)
- se_grace_timer.user.js -- adds a grace timer to StackExchange pages (more info)
- se_like_I_like_it.user.js -- on StackExchange sites, double-click code blocks to select all + keyboard behavior mimics Notepad++ (more info)