What are some alternatives?
When comparing Human Resource Machine and CodeSignal, you can also consider the following products
Robocode - Robocode is a programming game where the goal is to code a robot battle tank to compete against...
Codewars - Achieve code mastery through challenge.
CodeCombat - Learn programming with a multiplayer live coding strategy game.
CodinGame - CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.
Colobot Gold - Colobot Gold is modified version of the original https://alternativeto.
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.