Topcoder Sucks Customer Reviews and Feedback
Topcoder (formerly TopCoder) is a crowdsourcing company with an open global community of designers, developers, data scientists, and competitive programmers. Topcoder pays community members for their work on the projects and sells community services to corporate, mid-size, and small-business clients. Topcoder also organizes the annual Topcoder Open tournament and a series of smaller regional event.
A Quora user mentioned, "Once again, it’s all about the code: Just like LeetCode, TopCoder lacks any coverage on behavioral skills. You’ll need to use other resources to compensate for this downfall—another possible option is Interviewing.io. Not friendly to new users: Being more competitive programming-oriented, TopCoder already assumes that you have some level of coding proficiency from the get-go. Not the best UI: Perhaps a bit of a nitpick, but quite a few users find TopCoder’s user interface somewhat cluttered and hard to navigate."