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macrumors 601
Real question: How would people know if an app is coded in Electron? Listing one app that's an example of that really isn't educational or helpful, either, btw.
Google is your friend. Here are some Electron based apps:
Discord
Microsoft Teams A hub for teamwork that integrates chat, meetings, and file sharing.
Signal
Slack
Visual Studio Code (VS Code)
Notion
Figma
Dropbox
Twitch