Courses from 1000+ universities
17 years ago, Krishna Kumar started offering free PMP prep online. Today, it’s a leading digital upskilling platform that helps millions upskill in AI, cybersecurity, data science, and more.
600 Free Google Certifications
Artificial Intelligence
Programming Paradigms
Cloud Security
Uncommon Sense Teaching
FinTech Foundations and Overview
Mathematical and Computational Methods
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Explore a wide range of free and certified Systems core online courses. Find the best Systems core training programs and enhance your skills today!
Explore key AI security challenges in software development, focusing on OWASP Top 10 for LLMs, supply chain vulnerabilities, and practical mitigation strategies for CI/CD pipelines.
Delve into probabilistic proof systems and dot-product proofs, exploring their applications in circuit satisfiability, MAX-LIN approximation, and cryptographic verification complexity.
Master the fundamental concepts of AI and machine learning while exploring their transformative impact across various industries and real-world applications.
Discover the fundamentals of AI and ML, exploring core components, real-world applications, future trends, and key challenges in technology transformation across multiple industries.
Discover the fundamentals of cloud computing, from service models like IaaS, PaaS, and SaaS to deployment options, while learning how this technology transforms modern data management and IT operations.
Discover the fundamentals of cloud and edge computing, exploring service models, deployment strategies, and real-world applications while understanding how these technologies complement each other for optimal performance.
Discover how SDN revolutionizes network architecture through centralized control, programmability, and automation while exploring key components and modern networking principles.
Discover the essential building blocks of NLP, from text preprocessing to sentiment analysis, and learn how to apply these fundamental concepts in real-world scenarios.
Explore the critical principles of ethical AI development, from addressing algorithmic bias to implementing governance frameworks for responsible and transparent artificial intelligence systems.
Discover the essential concepts of IP networking through a beginner-friendly exploration that breaks down complex technical terms into easily digestible fundamentals.
Discover the fundamentals of Radio Access Network (RAN) technology, including base stations, transceivers, and mobile network connectivity principles.
Discover essential principles for achieving seamless technology integration, from standardization to scalability, enabling effective communication between diverse platforms and systems.
Explore the evolution of Radio Access Network architecture, from traditional systems to modern Open RAN, highlighting key developments in network design and industry transformation.
Discover the fundamental principles of AI systems, focusing on accountability, transparency, and trust through a clear, jargon-free exploration of these essential concepts.
Discover the fundamental principles of AI systems, focusing on growth, values, and security in a clear, jargon-free exploration suitable for all knowledge levels.
Get personalized course recommendations, track subjects and courses with reminders, and more.