Free courses can help you learn coding languages like Python and JavaScript, data analysis techniques, and web development fundamentals. You can build skills in problem-solving, algorithm design, and creating interactive websites. Many courses introduce tools such as Git for version control, SQL for database management, and various frameworks that streamline web development, allowing you to apply your skills in practical projects.

Skills you'll gain: Docker (Software), Linux Administration, Devops Tools, Containerization, DevOps, System Monitoring, Information Technology Operations, System Configuration, Performance Tuning, Configuration Management, Context Management, Network Troubleshooting, Debugging, Proxy Servers, Data Storage, Service Management, Software Installation, Command-Line Interface, Performance Measurement, Resource Management
Advanced · Course · 1 - 4 Weeks

KodeKloud
Skills you'll gain: Load Balancing, Linux Administration, Linux Servers, Web Servers, Firewall, Linux, Network Administration, Network Routing, Proxy Servers, Server Administration, Application Deployment, System Configuration, Linux Commands, Event-Driven Programming, Web Applications, Computer Networking, Network Security, Servers, Configuration Management, DevOps
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Nginx, API Gateway, Kubernetes, Linux Administration, Proxy Servers, Web Servers, Cloud-Native Computing, Performance Tuning, Network Routing, Load Balancing, Linux Commands, Infrastructure Security, Security Controls, Network Troubleshooting, Public Key Infrastructure, Network Security, Role-Based Access Control (RBAC), DevOps, System Configuration, Computer Networking
Beginner · Specialization · 3 - 6 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Object Oriented Programming (OOP), C++ (Programming Language), C and C++, Object Oriented Design, Computer Programming, Programming Principles, Code Reusability, Memory Management
★ 4.7 (403) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Java Programming, Java, Memory Management, Development Environment, Programming Principles, Computer Programming Tools, Computer Programming, Integrated Development Environments, Data Structures, Software Installation
★ 4.6 (181) · Beginner · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Objective-C (Programming Language), iOS Development, Apple iOS, Memory Management, Prototyping, Mobile Development, C and C++, Application Development, C (Programming Language), Object Oriented Programming (OOP), Computer Programming, Programming Principles, Data Structures
★ 4.6 (558) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: AI Orchestration, AI Workflows, Agentic Workflows, Agentic systems, Generative AI Agents, LLM Application, AI Integrations, Tool Calling, Large Language Modeling, Software Design Patterns, Memory Management
★ 4.7 (109) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Artificial Neural Networks, Image Analysis, Event-Driven Programming, Scalability, Applied Machine Learning, Deep Learning, C and C++, Memory Management, Performance Tuning, C++ (Programming Language), Dataflow, Digital Signal Processing, Linear Algebra, Distributed Computing, Hardware Architecture, Programming Principles, Computer Architecture, System Programming, Program Development, Machine Learning
★ 3 (212) · Intermediate · Specialization · 3 - 6 Months

University of California, Irvine
Skills you'll gain: Swift Programming, Objective-C (Programming Language), iOS Development, Core Data (Software), Apple iOS, Video Game Development, Game Design, User Interface (UI), Model View Controller, JSON, User Interface (UI) Design, UI Components, Mobile Development, User Interface and User Experience (UI/UX) Design, OAuth, Memory Management, Responsive Web Design, Prototyping, Animation and Game Design, Human Computer Interaction
★ 4.5 (710) · Beginner · Specialization · 3 - 6 Months

Duke University
Skills you'll gain: File I/O, Memory Management, Maintainability, C (Programming Language), Software Engineering, System Programming, Programming Principles, Software Development, Simulations, Command-Line Interface, Collaborative Software
★ 4.2 (182) · Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Bash (Scripting Language), Scalability, Distributed Computing, Shell Script, Computer Systems, Big Data, Linux Commands, Hardware Architecture, Operating Systems, Unix Shell, File Systems, Computing Platforms, Linux, Performance Testing, Scripting, Performance Tuning, Memory Management, Computer Architecture, Capacity Management, File Management
★ 3.8 (168) · Beginner · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: C and C++, Object Oriented Design, Object Oriented Programming (OOP), C (Programming Language), Programming Principles, Data Structures, Computer Programming, Algorithms, Maintainability, Memory Management
★ 4.9 (827) · Mixed · Course · 1 - 3 Months