1. Codecademy

Codecademy offers interactive coding lessons in languages like Python, JavaScript, and HTML/CSS, making it a great starting point for beginners.

2. freeCodeCamp

freeCodeCamp provides thousands of hours of free coding challenges, projects, and certifications in areas like web development, data science, and machine learning.

3. Khan Academy

Khan Academy features interactive coding tutorials on JavaScript, HTML/CSS, and SQL, perfect for beginners.

4. Coursera

Coursera offers free coding courses from top universities, including Stanford and Harvard, with subjects ranging from Python to machine learning.

5. edX

Much like Coursera, edX offers free courses from leading universities like MIT and Harvard. You can learn coding, data science, and computer science fundamentals.

6. The Odin Project

The Odin Project offers a full-stack curriculum, including HTML, CSS, JavaScript, Ruby, and more. It’s project-based, so you build your portfolio as you learn.

7. Udemy

Udemy has many free coding courses on various programming topics like Python, JavaScript, web development, and more, with practical projects included.

8. W3Schools

W3Schools offers tutorials and exercises on HTML, CSS, JavaScript, and SQL, with clear examples to help learners grasp core concepts.

9. GitHub Learning Lab

GitHub provides hands-on tutorials to help you learn Git, GitHub, and various programming languages, perfect for beginners and intermediate coders.

10. Codewars

Codewars offers coding challenges (kata) to solve in multiple programming languages. It’s a fun way to improve your coding skills through problem-solving.

11. SoloLearn

SoloLearn provides short interactive lessons and a supportive community for beginners looking to learn languages like Python, Java, C++, and JavaScript.

12. Python.org

The official Python website provides free tutorials, documentation, and a beginner’s guide to learning Python, the world’s most popular programming language.

13. Mozilla Developer Network (MDN)

MDN offers in-depth tutorials on web development technologies such as HTML, CSS, JavaScript, and more, along with excellent documentation.

14. HackerRank

HackerRank is ideal for practicing coding challenges and preparing for coding interviews. It covers various programming topics, including algorithms, data structures, and databases.

15. LeetCode

LeetCode is an excellent platform for solving coding challenges and improving your algorithmic thinking, commonly used by developers preparing for interviews.

16. Scrimba

Scrimba’s interactive lessons in web development technologies such as JavaScript, HTML, CSS, and React are perfect for visual learners.

17. CS50 (Harvard University)

CS50 is an introductory computer science course offered by Harvard that covers Python, C, and problem-solving techniques, among other topics.

18. Coding Dojo

Coding Dojo provides free coding challenges and a coding bootcamp (with a paid option) that covers Python, JavaScript, and C++.

19. Ruby Warrior

Ruby Warrior is a gamified platform to learn Ruby, where you move a warrior across the board by solving coding challenges.

20. CodeCombat

CodeCombat teaches coding by making you write code to control characters in a game-like environment. You can learn Python, JavaScript, and more.

21. Treehouse

Treehouse offers a 7-day free trial, and during this time, you can access their beginner-friendly courses in web development and programming.

22. The Net Ninja (YouTube)

The Net Ninja’s YouTube channel provides free tutorials on web development languages, including JavaScript, Node.js, React, and more.

23. EdX: Introduction to Computer Science

This free course from Harvard University offers a comprehensive introduction to computer science, focusing on C, Python, and algorithms.

24. FreeCodeCamp YouTube

The freeCodeCamp YouTube channel offers tutorials, coding challenges, and full-length courses on everything from front-end to back-end development.

25. Code Academy

Code Academy’s free version offers hands-on coding tutorials in languages such as Python, JavaScript, and Ruby, making it great for beginners.

26. CodinGame

CodinGame is an interactive platform where you can learn coding by solving puzzles and challenges in multiple programming languages.

27. ByteAcademy

ByteAcademy provides free coding resources, including tutorials and challenges in Python, data science, and other programming languages.

28. Learn Java

This site offers a comprehensive set of tutorials and exercises for learning Java, making it an ideal resource for beginners.

29. SQLZoo

SQLZoo offers free interactive tutorials and exercises to help you learn SQL, one of the most essential skills for working with databases.

30. Code.org

Code.org provides a range of free resources to help learners of all ages get started with coding, including courses for schools and beginners.

31. Learn JavaScript

LearnJavaScript.online is a free platform that helps you learn JavaScript through exercises and tutorials. It’s beginner-friendly and covers all major aspects of the language.

32. DataCamp

While DataCamp primarily offers paid content, there are many free introductory courses on topics such as data science, Python, and R programming.

33. Learn C

Learn-C.org is a great resource for beginners looking to dive into C programming. It offers free tutorials, examples, and exercises.

34. Dev.to

Dev.to is an online community of developers who share tutorials, guides, and tips on learning programming languages and web development.

35. Coderbyte

Coderbyte offers free coding challenges and tutorials to help you improve your coding and algorithm skills. It’s also useful for interview preparation.

36. Codeforces

Codeforces is a competitive programming platform where you can participate in contests and solve coding challenges to sharpen your skills.

37. Project Euler

Project Euler offers a collection of challenging math-based programming problems that help you improve problem-solving and coding skills.

38. Hackerearth

Hackerearth provides coding challenges, hackathons, and coding tutorials in multiple programming languages, focusing on problem-solving skills.

39. Google Developers Training

Google provides free tutorials and resources to learn Android development, machine learning, web development, and more.

40. MIT OpenCourseWare

MIT offers free access to its computer science and programming courses, including video lectures, assignments, and projects.

41. GeeksforGeeks

GeeksforGeeks provides tutorials, articles, and coding challenges in data structures, algorithms, and programming languages like C++, Java, and Python.

42. Stanford Online

Stanford University offers free online courses in computer science, artificial intelligence, and machine learning, taught by some of the best professors in the field.

43. Microsoft Learn

Microsoft Learn provides free resources to learn coding and development tools such as .NET, Azure, and JavaScript, along with practical exercises.

44. Java Code Geeks

Java Code Geeks is a valuable resource for learning Java programming through tutorials, code examples, and articles.

45. Codementor

CodeMentor offers a platform to learn coding and get one-on-one mentorship with expert developers. There are free resources available, along with paid mentorship.

46. InterviewBit

InterviewBit helps learners practice coding problems and improve their problem-solving skills, especially in preparation for coding interviews.

47. Khan Academy Computer Programming

Khan Academy’s computer programming section provides free tutorials on JavaScript, HTML/CSS, and more, through interactive lessons and videos.

48. C++ Programming

Cplusplus.com is an excellent resource for learning C++ through tutorials, references, and examples.

49. Turing

Turing.com offers free resources and articles on programming, web development, and coding career development.

50. TutorialsPoint

TutorialsPoint provides tutorials on numerous programming languages and topics, including Java, Python, C, and JavaScript.

51. Repl.it

Repl.it is an interactive online IDE that allows you to write and run code in multiple programming languages, including Python, JavaScript, and more.

52. CodePen

CodePen is an online code editor that helps you practice and showcase HTML, CSS, and JavaScript projects. It’s an excellent tool for web developers.

53. Codeply

Codeply is a responsive design playground and code editor for web development technologies like HTML, CSS, and JavaScript.

54. CSS-Tricks

CSS-Tricks is an educational website for web developers, offering in-depth tutorials on CSS, HTML, JavaScript, and more.

55. Fullstack Academy

Fullstack Academy offers free tutorials on web development topics like JavaScript, Node.js, and React.

56. Hackr.io

Hackr.io helps you find the best tutorials and online courses to learn programming. It features community-recommended content for various languages.

57. Skillshare

Skillshare offers free coding classes, including topics like Python, JavaScript, HTML/CSS, and web development.

58. Udacity

While most of Udacity’s courses are paid, there are free introductory courses on web development, data analysis, and more.

59. JavaTpoint

JavaTpoint is a free online platform to learn Java, C++, Python, and web development technologies. It provides tutorials and examples for each concept.

60. DevEd

DevEd offers a YouTube channel with coding tutorials on web development, including JavaScript, React, Node.js, and more.

61. DigitalOcean Tutorials

DigitalOcean offers free coding tutorials and articles on topics like Linux, web development, and cloud technologies.

62. Frontend Masters

Frontend Masters offers free coding resources on front-end technologies such as JavaScript, React, HTML, and CSS.

63. CodeGym

CodeGym offers an interactive, gamified platform to learn Java programming with exercises and challenges.

64. TopCoder

TopCoder provides a competitive programming platform with coding challenges and a supportive community for learners.

65. CodeAcademy Blog

The Codecademy blog provides tutorials, coding tips, and career advice for developers looking to improve their skills.

66. GoLang

LearnGo.org offers a comprehensive guide to learning Go, from beginner topics to advanced concepts, with hands-on examples.

67. Learn-R.org

Learn-R.org provides free tutorials and exercises to help you learn R programming, especially for data analysis.

68. Code FreeBootcamp

FreeBootcamp offers free resources and tutorials for full-stack web development, focusing on JavaScript, Node.js, and React.

69. Coderbyte

Coderbyte offers free challenges and tutorials that help you enhance your coding and problem-solving abilities in a wide range of languages.

70. Team Treehouse

Treehouse offers courses in web development, programming, and design, with free trials available.

71. Swift Playgrounds

Apple’s Swift Playgrounds app helps you learn Swift, the programming language used for iOS and macOS apps, through interactive lessons.

72. Google Codelabs

Google Codelabs offers tutorials on Android development, Firebase, machine learning, and other Google technologies.

73. GitHub Pages

GitHub Pages allows you to host and share your coding projects, while also offering tutorials to help you learn Git and GitHub.

74. JetBrains Academy

JetBrains Academy offers free online coding courses for Python, Java, Kotlin, and other languages.

75. Replit

Replit is an online coding platform that allows you to write, run, and host code in a variety of languages.

76. OpenAI Codex

OpenAI Codex offers AI-powered coding support, helping you generate and write code efficiently across various programming languages.

77. Web Dev Simplified

Web Dev Simplified offers a YouTube channel with tutorials and courses on web development technologies.

78. Sololearn Community

SoloLearn offers an active community where learners can engage, share knowledge, and get help from fellow coders.

79. Code Academy Community

Codecademy’s community allows learners to connect with others, ask questions, and share resources and advice on coding.

80. Stack Overflow

Stack Overflow is a coding community where you can ask questions, find answers to coding problems, and learn from other developers.

81. Svelte

Svelte offers a beginner’s guide to building fast web apps using the Svelte framework, including interactive tutorials and examples.

82. Cloud Academy

Cloud Academy offers free resources on cloud computing and DevOps, which include tutorials on coding in the cloud.

83. Codementor

Codementor provides live mentorship for developers, but you can access free resources, tutorials, and coding articles.

84. Python Tutor

Python Tutor helps you visualize Python code execution, making it easier for beginners to understand programming concepts.

85. Code Fights

Code Fights is a platform for learning programming through games and competitions, offering challenges and tutorials.

86. JavaCodeGeeks

JavaCodeGeeks is a comprehensive resource for learning Java and related technologies, with tutorials and examples for all skill levels.

87. LearnJavaOnline

LearnJavaOnline offers interactive Java tutorials that help beginners get started with the Java programming language.

88. Learn C++

LearnCpp.com is a free resource for learning C++ through tutorials and exercises.

89. Simpliv

Simpliv offers free coding courses, tutorials, and resources in a wide range of programming languages and technologies.

90. W3Techs

W3Techs provides web technology analysis and tutorials to help you understand how different programming languages and frameworks are used on the web.

91. Learn Git

Learn Git offers an interactive guide to understanding Git, the version control system used by developers worldwide.

92. Xcode Tutorials

Apple’s Xcode tutorials offer resources for learning how to build iOS apps using Swift.

93. Visual Studio Code

Visual Studio Code offers extensive documentation, guides, and tutorials to help you learn how to use the popular coding editor.

94. Frontend Masters

Frontend Masters offers online courses and tutorials for front-end web development, including JavaScript, HTML, and CSS.

95. Leetcode Discussion Forum

Leetcode’s community forum is a great place to find advice, solutions, and coding discussions related to LeetCode’s coding problems.

96. LearnCSS

LearnCSS offers free tutorials and articles on understanding CSS and creating visually appealing websites.

97. Swifttutorials

SwiftTutorials offers beginner-friendly tutorials for learning Swift and iOS development.

98. SQLShack

SQLShack offers free resources to learn SQL, covering beginner to advanced topics in database management.

99. CSSBattle

CSSBattle is a fun, interactive platform that challenges you to write minimal CSS to match given designs.

100. DesignCourse

DesignCourse offers tutorials and courses on both web design and web development, including HTML, CSS, JavaScript, and UX/UI design.