Coursera
Skills you'll gain: API Testing, Test Script Development, Scenario Testing, Software Testing, Integration Testing, Test Case, Test Automation, Acceptance Testing, Test Tools, Regression Testing, Test Execution Engine, Maintainability, User Interface (UI), Security Testing, Test Data, Scalability, Debugging, Authentications, Compliance Reporting, Automation
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: File I/O, Object Oriented Programming (OOP), Java Programming, Data Structures, Data Persistence, Programming Principles
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Kotlin, Android Development, Android Studio, Unit Testing, Object Oriented Programming (OOP), Mobile Development, Test Driven Development (TDD), Software Testing, Functional Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Flutter (Software), Mobile Development, Data Validation, User Interface (UI) Design, User Interface (UI), Application Design, Usability, Interactive Design, Image Quality, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AI Workflows, Tool Calling, OAuth, AI Orchestration, Middleware, Generative AI Agents, Interoperability, API Gateway, Agentic Workflows, Software Development Tools, LLM Application, Application Programming Interface (API), Agentic systems, Authentications, Real Time Data, Data Persistence, Context Management, Business Logic, Software Testing, Debugging
Intermediate · Course · 1 - 4 Weeks

The University of Sydney
Skills you'll gain: Advanced Mathematics, Integral Calculus, Calculus, Mathematical Theory & Analysis, Differential Equations, Applied Mathematics, Engineering Calculations, Mathematical Modeling, Linear Algebra, Physics, Derivatives
Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Video Production, Grammar, Peer Review, Writing, Editing, Proofreading, English Language, Creativity
Advanced · Course · 1 - 3 Months

Alex Genadinik
Skills you'll gain: Empathy, Creativity, Self-Awareness, Emotional Intelligence, Personal Development, Professional Development, Cognitive flexibility, Stress Management, Conflict Management, Cultural Diversity, Problem Solving, Mindfulness, Decision Making, Psychology
Mixed · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Role-Based Access Control (RBAC), Authorization (Computing), Identity and Access Management, AWS Identity and Access Management (IAM), Geographic Information Systems, Encryption, Data Security, Network Security, Information Systems Security, Web Components, Public Key Infrastructure, Wireless Networks
Beginner · Course · 1 - 4 Weeks

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Vibrations, Engineering Analysis, Mechanics, Structural Analysis, Mechanical Engineering, Engineering, Differential Equations, Mathematical Modeling
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Performance Tuning, Embedded Systems, Application Security, System Programming, Digital Signal Processing, Security Engineering, Computer Architecture, Hardware Architecture
Advanced · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Cryptographic Protocols, Cryptography, Exploit development, Amazon Web Services, Infrastructure Security, Cyber Security Strategy, Amazon Elastic Compute Cloud, Application Security, Cloud Computing, Email Security, Public Key Infrastructure, Containerization, SQL
Intermediate · Course · 1 - 4 Weeks