WhiteSource Renovate - Automate your dependency updates
Syften - Better social media keyword alerts
Dependabot - Automated dependency updates for your Ruby, Python, JavaScript, PHP, .NET, Go, Elixir, Rust, Java and Elm.
mention - Media monitoring made easy with Mention. Create alerts on your name, brand, competitors and be informed in real-time of any mention on the web and social networks
Hooks Bot - Easiest way to stay up to date on anything through Messenger
Google Alerts - Google Alerts will send you email or RSS updates of the latest relevant Google results (web, news...