- qSnap: Screen Capture, Screenshot, Annotation
- QUAKE
- Qualys BrowserCheck for Windows
- Quebles Emoticons
- Quick Equations
- Quick Maps
- Quick Note
- Quick QR Code Generator
- Quick Search for Google Drive™
- Quick SEO - PageRank, Backlinks & Alexa Tool
- Quick source viewer
- QuickBit for Fitbit
- QuickBooks Tool Hub
- QuickMark QR Code Extension
- QuickTime
- QuickTweet - for multiple Twitter™ accounts
- Quizlet
- Qustodio
- Qwant for Chrome
- Radiant Community Extension
- Radio for Google Chrome™
- RadioEnhancer
- Radioplayer
- RadioRage
- Raft