Practice & Participate
Practice Skills and Participate in Projects
Below is a list of sites to participate and practice data, machine learning, software development, analytics, and cloud computing skills.
If you are looking to learn new skills, please check out our list of Data & Software Training and Cloud Computing Training.
| Site | Description | Links | Sample Disciplines |
|---|---|---|---|
 Datacamp is an affiliate partner. Please read our disclosure policy. | Offers free and paid projects to participate in via competitions and skills assessments. All courses offer practice lessons. | https://datacamp.pxf.io/c/3741581/1112311/13294 | Data Science, Python, SQL, R, PowerBI, Tableau, SQL Server |
 | Practice Python has over 40 beginner Python exercises. | https://www.practicepython.org/ | Data Science, Python |
 | Front end, back end, data, database exercises, practice problems with solutions. There are over 50 skills to practice. | https://www.w3resource.com/index.php | R, Python, NoSQL, Scala, SQL, NumPy, Java, PHP, GraphQL |
 | Guided projects using Big Data (Hadoop, Spark etc), Machine Learning, Deep Learning and related technologies. | https://cloudxlab.com/projects | Machine Learning, Big Data, Python, Tensorflow, Hadoop, Spark, DevOps, Deep Learning |
 | Improve machine learning coding skills and learn to develop deep learning applications. Ability to learn to work with popular deep learning libraries such as Keras, TensorFlow, OpenCV and others. | https://colab.research.google.com/notebooks/welcome.ipynb#scrollTo=xitplqMNk_Hc | Data, Python, Pandas, TensorFlow |
 | Allow one to practice data science computational problems. The cloud computational environment supports Python 3 and R. | https://www.kaggle.com/ | Data Science, Python, R |
 | MachineHack is an online platform for Machine Learning competitions. | https://www.machinehack.com/ | Machine Learning, Data Science |
 | Platform is an open, collaborative, and automated machine learning environment. It incorporates features to find data, add data to analyze, download or create computational tasks, find or add data analysis flows and more. | https://www.openml.org/ | Data Science, Machine Learning, Analytics |
 | Hands-on AWS tutorials. Provides step-by-step tutorials to launch your first application. | https://aws.amazon.com/getting-started/hands-on/ | Cloud related: Containers, IoT, Databases, Storage, Front end web/mobile, Analytics, Machine Learning, AI, Security |
 | Has 173,556 Topics Across 59 Categories And 5,954,363 Projects. Everything from cloud, data, software development, and virtualization. | https://awesomeopensource.com/ | Cloud, Data, AI, Virtualization |
 | Scala exercises on GitHub. This is an Open Source project for learning different technologies based in the Scala Programming Language. | https://www.scala-exercises.org/ | Scala |
 | Solve coding quizzes that include Javascript, Python, PHP, Scala, and more. | https://www.codequizzes.com/ | Python, Javascript, Scala, Git, Golang, Bash, Spark, Rails |
 | Google development guide for developmeners. Ability to test code in labs and view samples based on ones own site. | https://developers.google.com/web/fundamentals/ | Google, Web Experiences, Testing Labs |
 | Has a host of programming tutorials and practice problems. There are is also a section for interview practice. | https://www.hackerearth.com/practice/ | Data Structures, Algorithms, Python, Machine Learning, Math |
 | Community and practice for data science professionals. | https://www.codementor.io/community/topic/data-science | Data Science, React, Angular, Javascript, Node.js, Ruby, Ruby on Rails, iOS, Andriod, Python |
 | Practice to visualizing data like an expert with practical how-tos for presentation, analysis, and understanding. | https://flowingdata.com/category/tutorials/ | Data, Visualization |
 | List of open source related artificial intelligence projects. | https://github.com/search?q=artificial+intelligence&ref=searchresults&type=Repositories | AI, Deep Learning |
 | This is a training site BUT has oaver 10,000 code challenges with options to choose the level of difficulty along with practice problems. | https://edabit.com/challenges | C#, C++, Java, Javascript, Python, Ruby, PHP, Swift |
 | Build and view SQL coding. Mostly used by database developers. Build a representative database (schema and data). | http://sqlfiddle.com/ | SQL |
 | For developers to practice their SQL queries, test code, and share SQL snippets | https://www.db-fiddle.com/ | Databases, MySQL, Postgre SQL, SQLite |
 | Has a challenge library of over 300 problems to practice coding from front end to back end. | https://coderbyte.com/ | Angular, Bash, C, C++, C#/.NET, Clojure, Dart, Elixir, Go, GraphQL, HTML/CSS, Java, JavaScript, jQuery, Kotlin, MySQL, Node.js, Python, PHP, R, React/React Native, Ruby, Rust, Scala, Swift, TypeScript, Vue.js |
 | GitHub is used to host code, review code, and collaborate with others. ALL PROGRAMMING skills are represented on the site. | https://github.com/ | data, machine learning, java, javascript, python, AI, php, SQL, R |
 | Has leaderboards, a coding community to join, and tutorials. Can also showcase to future employers. | https://www.hackerrank.com/ | Algorithms, Java, Databases, C, Data Structures, Linux Ruby, C++, Regex. SQL, AI |
 | Practice and train for 29 programming languages. | https://www.codewars.com/ | JavaScript, Ruby, Java, Python, Swift, Objective-C, C-Sharp, C++, C, PHP, TypeScript, SQL, Shell, Solidity, Clojure, Haskell, CoffeeScript, Elixir, Erlang, R, Scala, F-Sharp, OCaml, Go, Kotlin, Groovy, Lua, Rust, Dart |
 | Practice coding through a gaming format and other code challenges. | https://www.codingame.com/ | Bash, C, C++, C#, Clojure, D, Dart, F#, Go, Groovy, Haskell, Java, OpenJDK, JavaScript, Kotlin, Lua, Objective‑C, OCaml, Pascal, Perl, PHP, Python3, Ruby, Rust, Scala, Swift, TypeScript, VB.NET |
 | A platform that hosts an online educational program and programming community of global programmers from beginner to experienced with over 3000 problems. | https://www.codechef.com/ | Basic Programming, Arrays, Strings, Math, Sorting, Binary Search, Data Structure,s Greedy Algorithms, Dynamic Programming, Graphs, Segment Trees |
 | Solve math and computing problems using programming. | https://projecteuler.net/ | All languages |
 | Offers courses, tutorials and practice. | https://www.geeksforgeeks.org/ | Algorithms, Data Structures, C++, Java, Python, Javascript, Golang, CPP, Kotlin, Bootstrap, Django |
 | Technical assessments and code challenges. | https://geektastic.com/ | Python, PHP, Java, Javascript |
 | Practice code and enhance skills. Has a community with questions and contests. | https://leetcode.com/ | Algorithms, Databases, Shell, SQL |
 | Practicing code and building efficient algorithms. Has rankings and discussion groups. Has one of the largest coding libraries. | https://www.spoj.com/ | Algorithms |
 | GitLab is a DevOps software package that can develop, secure, and operate software. | https://about.gitlab.com/ | DevSecOps, DevOps |
 | A a Git-based source code repository and CI/CD tool hosting. | https://bitbucket.org/product | DevSecOps, Cloud Security, Software Development, Machine Learning, Web Development |
 | A self-hosted Git server that features integrated CI/CD (Continuous Integration/Continuous Deployment), Kanban boards, and package management. | https://onedev.io/ | DevOps, CI/CD, containerization, virtualization |
 | A fully managed source control service offered by Amazon Web Services (AWS) that hosts secure Git-based repositories. It enables developers to store, manage, and version control their code in the cloud. | https://aws.amazon.com/codecommit/ | Software Developers, IT Administrators |
 | Data science coding questions from top companies. | https://www.stratascratch.com/ | data science, SQL, Python |
