What are some alternatives?
When comparing Code4Startup and hackattic, you can also consider the following products
Quick Code - Curated list of free online programming courses
Frontloops - Level up your frontend skills with handcrafted tasks
Udemy - Online Courses - Learn Anything, On Your Schedule
Daily Coding Problem - Get exceptionally good at coding interviews
Code-Free Startup - Learn how to build real apps without coding
AlgoExpert - A better way to prep for tech interviews