3Cols - Manage your code snippets in the cloud fast, easy and free for personal use forever.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Simple Snippets - Simple Snippets is place to easily create and manage your code snippets. The main features of the Simple Snippets: code highlighting, snippet groups, public and private snippets.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
SnippetsLab - SnippetsLab is an easy-to-use snippets manager.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.