Sentry is an application monitoring platform built for developers - giving engineering teams real-time visibility into errors, performance bottlenecks, and crashes across web, mobile, and backend stacks. Started as an open-source side project in 2008, it now serves more than four million developers and 100,000+ organizations including Disney, Microsoft, Atlassian, and GitHub.
Mark Erikson is the primary maintainer of Redux and creator of Redux Toolkit - the tools that power state management in millions of React applications worldwide. Known online as @acemarke, he became the de facto keeper of Redux in 2016 when Dan Abramov handed off the project. Since then, he has rebuilt Redux's documentation from the ground up, designed the hooks API in React-Redux, and created Redux Toolkit to eliminate the boilerplate that once made Redux notorious. He is a Senior Front-End Engineer at Replay.io and a tireless community fixture - answering questions on Discord, Reddit, Bluesky, and anywhere else developers congregate online.