GitNotifier vs PullApprove: What are the differences?
GitNotifier: Get email notifications when someone stars or forks one of your GitHub repos and follows/unfollows you. We will send you notifications when someone stars or forks one of your repositories and when someone follows or unfollows you; PullApprove: Approve Pull Requests with a comment. Just start a comment with "Approved" (or a custom regular expression) to sign-off without ever leaving GitHub. PullApprove can be configured by a .pullapprove.yml YAML file in the root of your repo. With it, decide exactly what "approval" means to your team.
GitNotifier and PullApprove can be primarily classified as "Tools for GitHub" tools.
GitNotifier is an open source tool with 195 GitHub stars and 18 GitHub forks. Here's a link to GitNotifier's open source repository on GitHub.