Object Oriented Design courses can help you learn principles like encapsulation, inheritance, and polymorphism, along with design patterns such as Singleton and Factory. You can build skills in creating reusable code, improving software maintainability, and designing systems that are easier to understand and extend. Many courses introduce tools like UML for modeling, as well as programming languages such as Java and Python, which are commonly used to implement object-oriented concepts in real-world applications.

Skills you'll gain: WordPress, Ajax, Content Management Systems, Web Development, PHP (Scripting Language), Database Development, MySQL, Javascript and jQuery, Database Management, Cascading Style Sheets (CSS), User Accounts
Intermediate · Course · 1 - 4 Weeks

SkillUp
Skills you'll gain: Virtual Teams, Telecommuting, Team Leadership, Team Management, Peer Review, Workplace inclusivity, Rapport Building, Team Building, Management Training And Development, Leadership and Management, Teamwork, Collaboration, Strategic Leadership, Leadership, Collaborative Software, Delegation Skills, Cross-Functional Collaboration, Diversity and Inclusion, Trustworthiness, Communication
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Professionalism
Beginner · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Business Analysis, Business Systems Analysis, Stakeholder Engagement, Stakeholder Management, Business Requirements, Requirements Management, Business Process, Business Strategies, Performance Analysis, Strategic Thinking, Governance, Risk Analysis, Business Solutions, Verification And Validation, Prioritization
Beginner · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Computational Logic, Logical Reasoning, Deductive Reasoning, Theoretical Computer Science, Analytical Skills, Programming Principles, Computer Science, Data Analysis, Computer Programming, Algorithms, Verification And Validation, Systems Analysis, Software Development, Machine Learning
Beginner · Course · 1 - 3 Months

Skills you'll gain: jQuery, Ajax, Javascript and jQuery, JSON, Animations, Event-Driven Programming, Debugging, JavaScript Frameworks, UI Components, Application Programming Interface (API), Web Applications, Web Development Tools, Responsive Web Design, Javascript, Interactive Design, HTML and CSS, Game Design, Data Validation, User Interface (UI) Design
Intermediate · Specialization · 3 - 6 Months

Alignor
Skills you'll gain: Influencing, Conflict Management, Diversity Awareness, Collaboration, Diversity and Inclusion, Cultural Diversity, Decision Making, Team Management, Workplace inclusivity, Discussion Facilitation, Communication, Leadership, Negotiation, Interactive Learning, Active Listening
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Unit Testing, React.js, Webpack, Angular, Web Development Tools, JavaScript Frameworks, Debugging, Web Applications, Vue.JS, Object Oriented Programming (OOP), JSON
Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: AI Workflows, Artificial Intelligence and Machine Learning (AI/ML), Agentic systems, System Design and Implementation, Unified Modeling Language, Performance Metric, Performance Measurement, Requirements Analysis, Performance Analysis, Model Evaluation, Prototyping, Stakeholder Communications, Simulation and Simulation Software, Benchmarking
Beginner · Course · 1 - 4 Weeks

Universidad de los Andes
Skills you'll gain: Computer Vision, Vision Transformer (ViT), Convolutional Neural Networks, Image Analysis, Generative AI, Deep Learning, Augmented and Virtual Reality (AR/VR), Artificial Intelligence and Machine Learning (AI/ML), Computer Graphics, Autoencoders, Unsupervised Learning, 3D Assets
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Power Apps Component Framework, Microsoft Power Platform, Microsoft Azure, Microsoft 365, Platform As A Service (PaaS), No-Code Development, Enterprise Application Management, Application Development, Application Design, Microsoft Copilot, Data Management, Dashboard, Data Integration, Business Process Automation, Security Controls
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Rust (Programming Language), ChatGPT, Authentications, Generative AI Agents, Back-End Web Development, Web Servers, OpenAI API, Databases, Web Applications, Secure Coding, Command-Line Interface, Generative AI, AI Enablement, Agentic systems, API Testing, Key Management, Restful API, Development Environment, Unit Testing, Maintainability
Intermediate · Specialization · 1 - 3 Months