Geektastic is described as 'At Geektastic we help our client's thoroughly evaluate their future talent using our unique peer reviewed code challenge platform' and is an app in the Development category. There are more than 10 alternatives to Geektastic for a variety of platforms, including Online / Web-based, SaaS, Mac, Windows and Linux. The best alternative is HackerRank. It's not free, so if you're looking for a free alternative, you could try Codewars or CodinGame. Other great apps like Geektastic are CheckIO (Free, Open Source), LeetCode (Freemium), Screeps (Paid) and Coderbyte (Freemium).
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.
Screeps is a massive multiplayer online real-time strategy game. Each player can create his or her own colony in a single persistent world shared by all the players. Such a colony can mine resources, build units, conquer territory.
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.
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.