Software to manage code snippets, configs, etc.

Boostnote

Boostnote is suitable for this task. Some key features I care about:

• No database, just plain files, make it easy to sync with Dropbox
• Global shortcut (Win+Alt+S) to search snippets, easy to preview and copy
  • Update: 开发者把全局搜索窗口干掉了，说是没什么人用。Boostnote 不思进取，不再使用之

TiddlyWiki

Currently I use TiddlyWiki to manage snippets.