last-slack - Display your scrobbled tracks from last.fm in Slack
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Sound Control - App-specific volume control
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Magic Playlist - Get the playlist of your dreams based on a song
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.