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.

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

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
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

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

Pragmatic AI Labs
Skills you'll gain: Debugging, Test Driven Development (TDD), Unit Testing, AI Integrations, Test Script Development, Software Testing, Test Automation, Context Engineering, Responsible AI, Risking, Software Architecture, Verification And Validation, AI literacy, AI Workflows, Software Documentation, Engineering Documentation, Python Programming, Large Language Modeling, Cloud Computing Architecture
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Model Optimization, Feature Engineering, Model Deployment, Tensorflow, Model Training, Exploratory Data Analysis, Google Cloud Platform, Model Evaluation, Data Preprocessing, Keras (Neural Network Library), Data Quality, Machine Learning Software, Business Metrics, Machine Learning Methods, Machine Learning, Applied Machine Learning, Logistic Regression, Dataflow, Data Pipelines, Cloud Deployment
★ 4.6 (448) · Intermediate · Specialization · 3 - 6 Months

University of Toronto
Skills you'll gain: Apple iOS, iOS Development, Swift Programming, Mobile Development, Application Design, Application Development, User Interface (UI), UI Components, Human Computer Interaction, Interactive Design, Interaction Design, Graphical Tools, Graphic and Visual Design, Data Persistence, Animations, Computer Graphics, Persistence, Network Model
★ 4.1 (269) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Data Storytelling, Email Marketing, Google Ads, Digital Advertising, Paid media, Social Media Analytics, Social Media Marketing, Search Engine Optimization, Google Analytics, Customer Retention, Digital Marketing, Marketing Budgets, Loyalty Programs, Order Fulfillment, Search Engine Marketing, Web Analytics, Online Advertising, Digital Marketing Tools, Marketing, E-Commerce
★ 4.9 (338) · Beginner · Professional Certificate · 3 - 6 Months

Corporate Finance Institute
Skills you'll gain: Environmental Social And Corporate Governance (ESG), Corporate Sustainability, Sustainable Business, Business Reporting, Risk Management Framework, Sustainability Reporting, Risk Management, Business Intelligence, Stakeholder Analysis, Environmental Issue, Stakeholder Engagement, Corporate Strategy, Governance, Performance Analysis, Stakeholder Management, Case Studies
★ 4.8 (315) · Beginner · Course · 1 - 3 Months
Rice University
Skills you'll gain: Behavioral Economics, Portfolio Management, Investments, Wealth Management, Portfolio Risk, Financial Market, Investment Management, Asset Management, Consumer Behaviour, Market Dynamics, Capital Markets, Decision Making, Finance, Market Analysis, Financial Trading, Equities, Securities Trading
★ 4.6 (284) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Power Electronics, Thermal Management, Electrical Safety, Electrical Power, Electric Power Systems, Electronic Systems, Electrical Equipment, Electrical Systems, Embedded Software, Electronic Components, Energy and Utilities, HVAC, Basic Electrical Systems, Sustainable Technologies, Automation, Environmental Issue, Environment and Resource Management, Environmental Regulations, Environmental Engineering and Restoration, Geospatial Information and Technology
★ 4.2 (294) · Intermediate · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Spring Framework, Java Programming, Java, File I/O, Java Platform Enterprise Edition (J2EE), Object Oriented Programming (OOP), Application Frameworks, Code Reusability, Object Oriented Design, Data Structures, File Management
★ 4.7 (224) · Intermediate · Course · 1 - 3 Months