Datree is a git-based policy engine.
It allows engineering teams to automatically enforce coding standards and security policies directly within their git workflow.

Datree connects with GitHub pull requests to provide automatic policy compliance checks and insights for every code change. Create and enforce custom or built-in policies, in the context of your dev stack.

Sentry provides real-time crash reporting, giving your team insight into errors affecting your customers in production. Sentry supports dozens of languages and frameworks and is trusted by thousands of companies like Pinterest, Uber, Stripe, Dropbox, and Airbnb.

Sentry doesn't just alert you to errors, but integrates into your GitHub development flow by linking errors to the commit and author likely responsible, creating new GitHub Issues, and resolving errors with commit message.