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.


Site Description Sample Disciplines
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Offers free and paid projects to participate in via competitions and skills assessments. All courses offer practice lessons. Data Science, Python, SQL, R, PowerBI, Tableau, SQL Server
practicepython Practice Python has over 40 beginner Python exercises. Data Science, Python
w3rresource Front end, back end, data, database exercises, practice problems with solutions. There are over 50 skills to practice. R, Python, NoSQL, Scala, SQL, NumPy, Java, PHP, GraphQL
Guided projects using Big Data (Hadoop, Spark etc), Machine Learning, Deep Learning and related technologies. Machine Learning, Big Data, Python, Tensorflow, Hadoop, Spark, DevOps, Deep Learning
colaboratory 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. Data, Python, Pandas, TensorFlow
Kaggle Allow one to practice data science computational problems. The cloud computational environment supports Python 3 and R. Data Science, Python, R
machinehack MachineHack is an online platform for Machine Learning competitions. Machine Learning, Data Science
openml 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. Data Science, Machine Learning, Analytics
aws Hands-on AWS tutorials. Provides step-by-step tutorials to launch your first application. Cloud related: Containers, IoT, Databases, Storage, Front end web/mobile, Analytics, Machine Learning, AI, Security
awesomeopensource Has 173,556 Topics Across 59 Categories And 5,954,363 Projects. Everything from cloud, data, software development, and virtualization. Cloud, Data, AI, Virtualization
Scala exercises on GitHub. This is an Open Source project for learning different technologies based in the Scala Programming Language. Scala
codequizzes Solve coding quizzes that include Javascript, Python, PHP, Scala, and more. Python, Javascript, Scala, Git, Golang, Bash, Spark, Rails
webdev Google development guide for developmeners. Ability to test code in labs and view samples based on ones own site. Google, Web Experiences, Testing Labs
hackerearth Has a host of programming tutorials and practice problems. There are is also a section for interview practice. Data Structures, Algorithms, Python, Machine Learning, Math
codementor Community and practice for data science professionals. Data Science, React, Angular, Javascript, Node.js, Ruby, Ruby on Rails, iOS, Andriod, Python
flowingdata Practice to visualizing data like an expert with practical how-tos for presentation, analysis, and understanding. Data, Visualization
githubAI List of open source related artificial intelligence projects. AI, Deep Learning
edabit 2 This is a training site BUT has oaver 10,000 code challenges with options to choose the level of difficulty along with practice problems. C#, C++, Java, Javascript, Python, Ruby, PHP, Swift
sql fiddle Build and view SQL coding. Mostly used by database developers. Build a representative database (schema and data). SQL
db fiddle For developers to practice their SQL queries, test code, and share SQL snippets Databases, MySQL, Postgre SQL, SQLite
coderbyte Has a challenge library of over 300 problems to practice coding from front end to back end. 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 GitHub is used to host code, review code, and collaborate with others. ALL PROGRAMMING skills are represented on the site. data, machine learning, java, javascript, python, AI, php, SQL, R
hackerrank Has leaderboards, a coding community to join, and tutorials. Can also showcase to future employers. Algorithms, Java, Databases, C, Data Structures, Linux Ruby, C++, Regex. SQL, AI
codewars Practice and train for 29 programming languages. 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
codeingame Practice coding through a gaming format and other code challenges. 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
codechef A platform that hosts an online educational program and programming community of global programmers from beginner to experienced with over 3000 problems. Basic Programming, Arrays, Strings, Math, Sorting, Binary Search, Data Structure,s Greedy Algorithms, Dynamic Programming, Graphs, Segment Trees
projecteuler Solve math and computing problems using programming. All languages
geeksforgeeks Offers courses, tutorials and practice. Algorithms, Data Structures, C++, Java, Python, Javascript, Golang, CPP, Kotlin, Bootstrap, Django
geektastic Technical assessments and code challenges. Python, PHP, Java, Javascript
leetcode Practice code and enhance skills. Has a community with questions and contests. Algorithms, Databases, Shell, SQL
sphere online judge Practicing code and building efficient algorithms. Has rankings and discussion groups. Has one of the largest coding libraries. Algorithms