PhraseExpress has streamlined my workflow and productivity for more than a decade. Setting it up is a breeze, and it integrates seamlessly with all my applications. The autocomplete function is saving me countless keystrokes. Kudos to the developers for the intuitive design and robust performance. Strongly recommended. There also is an ios version but I am on Android. A linux version would make it perfect.
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.
TextExpander - TextExpander: Communicate Smarter. Gather, Perfect, Share Your Knowledge. Recall your best words instantly, repeatedly.
GitHub Gist - Gist is a simple way to share snippets and pastes with others.
AutoHotkey - The ultimate automation scripting language for Windows.
3Cols - Manage your code snippets in the cloud fast, easy and free for personal use forever.
Beeftext - Beeftext is an open-source text substitution tool for Windows.