Software testing courses can help you learn test planning, test case design, automated testing, and performance testing. You can build skills in identifying bugs, writing effective test scripts, and using various testing methodologies. Many courses introduce tools like Selenium for automation, JUnit for unit testing, and JIRA for issue tracking, showing how these skills apply in real-world software development environments.

Scrimba
Skills you'll gain: Vibe coding, Model Context Protocol, Context Management, Context Engineering, AI Workflows, Integrated Development Environments, AI Integrations, Software Installation, Agentic Workflows, Code Review, System Configuration, Debugging, Generative AI Agents, Web Development Tools, Software Development, User Interface (UI), Web Development
★ 4.3 (179) · Intermediate · Course · 1 - 3 Months

28DIGITAL
Skills you'll gain: Technical Standard, General Data Protection Regulation (GDPR), Personally Identifiable Information, Information Privacy, Case Law, Medical Privacy, Court Systems, Telecommunications, Legal Writing, Law, Regulation, and Compliance, Legal Research, Ethical Standards And Conduct, Data Ethics, European History, International Relations, Interoperability, Data Security, Ancient History, Cybersecurity, Emerging Technologies
★ 4.4 (385) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Entrepreneurship, Market Opportunities, Market Analysis, Innovation, Target Market, Design Thinking, Go To Market Strategy, Product Strategy, Customer Engagement, Entrepreneurial Finance, Business Modeling, Business Strategies
★ 4.6 (330) · Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Responsive Web Design, HTML and CSS, Hypertext Markup Language (HTML), Typography, Cascading Style Sheets (CSS), Web Design, Web Development Tools, Browser Compatibility, Front-End Web Development, Application Deployment, Web Design and Development, Web Development, Computer Programming Tools, Animations, Development Environment, Software Development Tools, UI Components, Javascript, Maintainability, User Interface (UI)
★ 4.6 (250) · Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Typography, Graphic and Visual Design, Design, Creative Design, Graphic Design, Digital Design, Graphic and Visual Design Software, Layout Design, Design Software, Design Elements And Principles, Color Theory
★ 4.7 (292) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Surveys, Survey Creation, Data Literacy, Data Visualization, Data Analysis, Peer Review, Research Design, Statistics, Probability & Statistics, Data Presentation, Sampling (Statistics), Regression Analysis, Descriptive Statistics, Research, Probability, Quantitative Research, Analytics, Logistic Regression, Correlation Analysis, Statistical Hypothesis Testing
★ 4.6 (269) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Virtualization and Virtual Machines, Virtualization, Hardware Troubleshooting, Network Troubleshooting, Computer Hardware, Cloud Computing, Cloud Hosting, Technical Support and Services, Technical Support, General Networking, End User Training and Support, Peripheral Devices, Networking Hardware, System Configuration, Data Storage, Network Administration, Information Technology, Hardware Architecture, Data Storage Technologies, Configuration Management
★ 4.6 (214) · Advanced · Course · 1 - 3 Months

Skills you'll gain: Verification And Validation, Theoretical Computer Science, System Testing, Embedded Software, Software Systems, Communication Systems, Systems Design, System Design and Implementation, Embedded Systems, Automation, Process Modeling, Behavioral Management, System Configuration, Markov Model
★ 4.4 (183) · Intermediate · Course · 1 - 4 Weeks
University of Michigan
Skills you'll gain: Infectious Diseases, Patient Treatment, Diagnostic Tests, Bloodborne Pathogens, Health Disparities, Infection Control, Patient Education and Support, Laboratory Testing, Public Health and Disease Prevention, Chronic Diseases, Nursing and Patient Care, Preventative Care, Health Equity, Health Education, Public Health, Mental Health Diseases and Disorders, Health Policy, Social Sciences, Microbiology, Cultural Diversity
★ 4.8 (426) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Back-End Web Development, Django (Web Framework), Version Control, Git (Version Control System), API Testing, Web Development, Authentications, API Design, Application Development, Application Programming Interface (API), Restful API, Unit Testing, Test Tools, Database Development, MySQL, User Accounts, Web Applications, Databases
★ 4.6 (184) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: C and C++, C++ (Programming Language), Hardware Architecture, Programming Principles, Computer Architecture, OS Process Management, Data Access, Program Development, Algorithms, Python Programming, Data Sharing, Development Environment
★ 2.7 (150) · Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Video Editing, TikTok, Content Performance Analysis, Canva (Software), Photo/Video Production and Technology, Visual Storytelling, Content Scheduling, Graphic and Visual Design, Graphic Design, Graphic and Visual Design Software, Content Optimization, ChatGPT, Storytelling, Social Media Content, Content Creation, Videography, Social Media Strategy, Analytics, Video Production, Marketing
★ 4.4 (206) · Beginner · Specialization · 3 - 6 Months