A visual-first reading app for system design and coding interviews. Concept modules build from the ground up, technology pages cover the systems designs name, and worked designs open with the hard part and have diagrams you can click. Outage case studies turn real postmortems into lessons, and a coding track lets you step through each algorithm as the code runs. Most of it is free. Premium adds an interview script for every design and courses on Frontend System Design and AI Engineering.
Booklines helps you store your favorite book lines in your mobile phone. You can convert your book text to a digital copy by taking a picture or using your gallery photos and easily share them with your friends or on social media.
