What is ⌘ Cmd + S keyboard shortcut for?

Apple iBooks - Save a book  

Apple macOS - Save the current document  

elementary OS - Workspace overview  

Firefox (macOS) - Save Page As  

Waze Map Editor - Save edits  

Wunderlist - Sync  

TextMate - Save  

Tomboy 0.23 - Strikeout  

Typora 0.9.81 (macOS) - Save  

Ulysses (macOS) - Save version  

Adobe Dimension CC (Mac) - Save  

Adobe Illustrator (Mac) - Save changes made to the document  

Adobe Lightroom Classic (Mac) - Save metadata to file  

Adobe Lightroom Classic (Mac) - Save slide show settings  

Adobe Lightroom Classic (Mac) - Save print settings  

Adobe Lightroom Classic (Mac) - Save web gallery settings  

Adobe Premiere Pro (Mac) - Save  

Adobe XD (Mac) - Save...  

Autodesk SketchBook (Mac) - Save  

Canva (Mac) - Save  

Corel Painter (Mac) - Save  

DaVinci Resolve 15 (Mac) - Save project  

Harmony 20 (macOS) - Save  

OmniGraffle 7 - Save  

Pixelmator Pro - Save an image  

Shotcut (Mac) - Save  

Sketch - Save document. Once you save your Sketch document, Mac will auto-save the file continuously. This can be turned off from Sketch > Preferences > General or Cmd + ,  

Substance Painter (Mac) - Save Project  

Xcode - Save  

Xcode - Save the active document (equivalent to the Save command)  

Alfred 4 - While in the Clipboard Viewer, save current clip as a snippet  

VMware Fusion - Control + S  

VMware Fusion - Snapshots  

AWS Cloud9 IDE (Mac) - Save  

BBEdit 13 - Save  

Coda for iOS - Save  

CodeMirror - Not defined by the core library, only referred to in key maps. Intended to provide an easy way for user code to define a save command  

CoffeeCup Web Editor - Save file  

IntelliJ IDEA (macOS) - Save all  

Looker 6.8 (Mac) - Save as a Look  

Looker 6.8 (Mac) - Save  

Mode SQL Editor (Mac) - Save query  

Proto.io (macOS) - Save  

RStudio (Mac) - Save active document  

Visual Studio Code (Mac) - Save  

Elementor - Save  

Pandora - Shuffle  

Pocket for Mac - Save from Clipboard  

ProtonMail - Save the contact  

Kodi - Screen shot  

QLab 4 - Save  

Total War: Attila (Mac) - Quick save  

Twitterrific 6 - Save search  

1Password (Mac) - Save changes to an item.  

1Password (Mac) - Save a new Login for the current website.  

1Password (Mac) - Save changes to an item in a separate window.  

Dashlane - Save current item (after editing)  

Ableton Live 10 (Mac) - Save Live Set  

Adobe Captivate 2019 (macOS) - Open the project  

Adobe Captivate 2019 (macOS) - Save  

Apple GarageBand - Save the current project  

Apple Pages - Save a document  

ERPNext - Trigger primary action  

Final Draft 11 (Mac) - Save  

Google Sheets (Mac) - Save (every change is saved automatically in Drive)  

Kindle for Mac - Read the current sentence  

Melodyne 4 (Mac) - Save  

Nuendo 10 (macOS) - Save  

OmniFocus 3.3 (iOS) - Save (when adding a new item only)  

Pivotal Tracker - Save currently open story  

Pivotal Tracker - (when editing a comment) Save the comment  

Pivotal Tracker - (anywhere else in the story) Save and close the story  

Rekordbox 6 (macOS) - Previous sequence  

Tableau (Mac) - Save file  

Tableau (Mac) - Save workbook  

Things (iPad) - Show Jump Start  

Things (Mac) - Show Jump Start  

GeoGebra - Save  

JMP 15 (macOS) - Save file