Yes, there are several alternatives to LeetCode that cater to different aspects of coding practice and learning, and some of them are free or offer more affordable options. Codeforces is indeed one of the free platforms that focus on competitive programming and hosts contests, but it's not the only one. Below are a few reputable platforms where you can practice coding, participate in challenges, and improve your skills, often at a lower cost than LeetCode: 1. **Codeforces**: It's free to use and provides a wide range of problems of varying difficulty. Codeforces is particularly popular among competitive programmers, and it also allows users to compete in real-time contests. 2. **HackerRank**: Offers a large collection of challenges in different domains such as algorithms, mathematics, SQL, functional programming, AI, and more. It is free to solve problems, and you only need to pay if you want access to premium content or practices. 3. **CodeChef**: A non-profit competitive programming website that offers a multitude of challenges. You can write and submit solutions in their online editor for free, and participate in online contests that range from beginner to advanced levels. 4. **Exercism**: A free, open-source platform that provides coding exercises in various programming languages. It helps in improving coding skills with the help of mentoring by experienced volunteers. 5. **Edabit**: Offers a way to improve coding skills with interactive challenges. It has a free tier with plenty of challenges, and it offers a very affordable premium version. 6. **LeetCode Explore**: LeetCode has a section called "Explore," which provides a structured learning path and is free of charge. 7. **Project Euler**: A series of challenging mathematical/computer programming problems that can be solved through more efficient coding and mathematical understanding. It's free and is very useful for someone looking to enhance their problem-solving skills. 8. **Spoj**: It is an online judge system that provides a vast collection of problems to practice online and you can submit your solution in a language of your choice. It is mostly free to use. 9. **Coderbyte**: Offers a mix of free and paid challenges and tutorials to help you prepare for coding interviews. The paid membership provides additional resources and challenges. Each platform has its own strengths and communities. Some focus more on job interview preparation (like LeetCode), while others are geared towards competitive programming. It's a good idea to explore several platforms to find which one aligns best with your learning style and goals.