InterviewBit is described as 'gamifies the experience of practicing for your interview and includes lots of sample problems. The problems have been categorized into topics and then micro-concepts within topics. Each problems have hints and editorials with them' and is an website in the Development category. There are more than 10 alternatives to InterviewBit, not only websites but also apps for a variety of platforms, including SaaS, Android, Self-Hosted solutions and Mac. The best alternative is HackerRank. It's not free, so if you're looking for a free alternative, you could try LeetCode or Project Euler. Other great sites and apps similar to InterviewBit are CodinGame (Free), Coderbyte (Freemium), CodeSignal (Paid) and Spoj (Free).
LeetCode is a platform for learning and improving coding skills with the goal of being fully prepared for programming interviews. Choose problems to solve from categories such as System Design, Algorithms and Database, join code contests and engage in mock interviews.
Coderbyte is a place built for anyone to practice and perfect their programming skills. Challenges are added almost every day so you can work on applying your algorithmic thought process on any problem you want at anytime.
CodeSignal is the leading provider of assessments for technical hires. As the creator of the Predictive Coding Score, a measure of a candidates coding skills, CodeSignal provides HR teams with Certified Assessments, Custom Tests, and Live Interviews.
Sphere Online Judge created for the coders' community to train, to learn and to make progress. With thousands of programming problems and an international group of users Spoj is one of the best programmers' communities and online judges in the world.
Codility is an evidence-based platform helps hiring teams predict the real-life skills of their candidates, remotely and at scale. This brings faster hiring, time savings, and gives engineers more time to solve problems that matter.