Elisi - Elisi – Digital Bullet Journal app allows the user to track their week by making plans and to-do lists.
The Y Combinator Database - The definitive database of YC companies with all the metrics
goalmap - A brand new goal-setting app
Startup School - How to start a startup, by Y Combinator
HabitMinder - Change your habits, change your life! Your healthy habit reminder and tracker.
Y Combinator Companies - Interactive list of all 1000+ YC companies