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Contests are a popular way for companies and individuals to engage with their audiences and reward them for their participation. Whether it's a writing competition, a photo contest, or a social media giveaway, there are many opportunities to enter and win prizes. This category includes websites that host various types of contests, as well as resources for finding and entering them. From cash prizes to free products, there's always a chance to win something exciting.
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| Codeforces https://codeforces.com Programming competitions and contests |
| Coderbyte https://coderbyte.com Coding Challenges and Programming Practice |
| HackerRank https://www.hackerrank.com HackerRank is the market-leading technical assessment and remote interview solution |
| Kaggle https://www.kaggle.com The Home of Data Science & Machine Learning |
| LeetCode https://leetcode.com The World's Leading Online Programming Learning Platform |
| Topcoder https://www.topcoder.com Design & Build Competitions |