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: 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: Engineering, Scientific, and Technical Instruments, Embedded Systems, Embedded Software, Real Time Data, Electronics, Electronics Engineering, Electronic Components, Vibrations, Intrusion Detection and Prevention, Design Specifications, Computer Displays
★ 4.7 (259) · Intermediate · Course · 1 - 3 Months

University of Virginia
Skills you'll gain: Employee Engagement, Management Training And Development, Drive Engagement, Team Management, Strategic Planning, Case Studies, People Development, Employee Performance Management, Team Building, People Management, Human Resource Strategy, Growth Strategies, Leadership Development, Entrepreneurship, Human Capital, Plan Execution, Organizational Development, Planning, Innovation, Business Intelligence
★ 4.8 (246) · Mixed · Course · 1 - 3 Months

American Psychological Association
Skills you'll gain: Institutional Review Board (IRB), Descriptive Statistics, Quantitative Research, Data Literacy, Scientific Methods, Graphing, Research Design, Statistical Visualization, Statistical Hypothesis Testing, Science and Research, Research Methodologies, Probability & Statistics, Research, Statistical Inference, Statistics, Statistical Analysis, Statistical Methods, Ethical Standards And Conduct, Data Analysis, Research and Design
★ 4.8 (296) · Beginner · Specialization · 3 - 6 Months

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

University of Minnesota
Skills you'll gain: Open Web Application Security Project (OWASP), Cloud Security, Authentications, Key Management, Data Security, Cloud Applications, Cloud Services, Application Security, Authorization (Computing), Cyber Risk, Secure Coding, Cloud Storage, Personally Identifiable Information, DevSecOps, General Data Protection Regulation (GDPR), Network Security, Information Privacy, Continuous Monitoring, Computer Security, Cryptography
★ 4.3 (172) · Beginner · Specialization · 3 - 6 Months

University of California, Davis
Skills you'll gain: Social Network Analysis, Network Analysis, Data Wrangling, Social Sciences, Graph Theory, Data Cleansing, Statistical Visualization, Data Manipulation, Data Visualization, Data Visualization Software, Predictive Analytics
★ 4.7 (248) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Canva (Software), Content Creation, Visual Storytelling, Design Elements And Principles, Digital Design, Graphical Tools, Design, Graphics Software, Graphic and Visual Design Software
★ 4.6 (291) · Beginner · Guided Project · Less Than 2 Hours

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

LearnQuest
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Software Design, Programming Principles
★ 4.7 (213) · Intermediate · Course · 1 - 3 Months

Rice University
Skills you'll gain: Economics, Supply And Demand, Business Economics, Game Theory, Market Dynamics, Economics, Policy, and Social Studies, Economic Development, Financial Policy, Socioeconomics, Market Analysis, Operating Cost, Public Policies, Labor Relations, Tax, International Finance, Fiscal Management, General Finance, Cost Benefit Analysis, Cost Accounting, Investments
★ 4.8 (158) · Beginner · Specialization · 3 - 6 Months

Duke University
Skills you'll gain: Debugging, Code Reusability, Algorithms, Microsoft Visual Studio, Problem Solving, Computer Programming Tools, Computational Logic, Python Programming, Software Development, Data Analysis, Scripting Languages
★ 4 (76) · Beginner · Course · 1 - 4 Weeks