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.

University of Colorado Boulder
Skills you'll gain: Descriptive Statistics, Statistical Visualization, Data Transformation, Data Cleansing, Probability, Box Plots, Histogram, Probability Distribution, Probability & Statistics, Scatter Plots, Statistics, Microsoft Excel, Excel Formulas, Data Analysis, Statistical Methods, Spreadsheet Software, Bayesian Statistics
★ 4.5 (42) · Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Data Structures, Programming Principles, Python Programming, Computer Programming, Web Development Tools, Software Engineering, Web Development
★ 4.5 (43) · Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: MITRE ATT&CK Framework, Penetration Testing, Exploitation techniques, Brute-force attacks, Cyber Operations, Scripting, Cybersecurity, Python Programming, Network Analysis, Automation
★ 4.4 (56) · Mixed · Course · 1 - 4 Weeks
École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Programming Principles, Data Structures, Functional Design, Object Oriented Programming (OOP), Other Programming Languages, Object Oriented Design, Computational Logic, Command-Line Interface
★ 4.8 (66) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: AI Product Strategy, Product Lifecycle Management, Quality Assurance and Control, Product Quality (QA/QC), Quality Assurance, Product Planning, Product Management, Release Management, Sales Strategy, New Product Development, Quality Monitoring, Performance Analysis, Product Development, Technical Product Management, Promotional Strategies, Performance Measurement, Responsible AI, Marketing Planning, Product Improvement, Campaign Planning
★ 4.6 (63) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Canva (Software), Visual Design, Layout Design, Design Elements And Principles, Workflow Management, Design Strategies, Graphic and Visual Design, Digital Design, Graphic and Visual Design Software, Marketing Collateral, Graphic Design, Marketing Design, Content Creation, Marketing Materials, Color Theory, Portfolio Management, Brand Awareness
★ 4.7 (96) · Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Linux Commands, Metasploit, Open Web Application Security Project (OWASP), Linux, Penetration Testing, Exploit development, Vulnerability Scanning, Command-Line Interface, Exploitation techniques, Security Testing, Linux Administration, Scripting, Vulnerability Assessments, Hardening, Brute-force attacks, General Networking, Scripting Languages, Shell Script, Cybersecurity, Network Security
★ 4.3 (50) · Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: HTML and CSS, Responsive Web Design, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Web Design and Development, File Management, Web Design, Front-End Web Development, Web Development
★ 4.8 (74) · Beginner · Course · 1 - 4 Weeks

Tally Education and Distribution Services Private Limited
Skills you'll gain: Accounts Payable and Receivable, Accounts Payable, Accounts Receivable, Accounting Software, Balancing (Ledger/Billing), Ledgers (Accounting), Accounting and Finance Software, Financial Reporting, Billing & Invoicing, Accounting, Financial Accounting, General Ledger, Sales Tax, General Accounting, Financial Statements, Inventory Management, Bookkeeping, International Finance, Inventory Accounting, Corporate Tax
★ 4.6 (54) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Ethics, Dashboard Creation, Dashboard, Power BI, Business Intelligence, Interactive Data Visualization, Data Presentation, Data Visualization, Data Visualization Software, Data-Driven Decision-Making, Business Reporting, Business Analytics, Data Analysis Expressions (DAX), Data Security, Ethical Standards And Conduct, Microsoft Power Platform, Data Management, Data Analysis, Performance Tuning, Role-Based Access Control (RBAC)
★ 4.7 (50) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Model Evaluation, Forecasting, Trend Analysis, Statistical Visualization, Spreadsheet Software, Regression Analysis, Time Series Analysis and Forecasting, Statistical Methods, Statistical Analysis, Plot (Graphics), Predictive Modeling, Data-Driven Decision-Making, Data Analysis
★ 4.5 (114) · Intermediate · Guided Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Security Controls, Cybersecurity, Encryption, Cyber Attacks, Information Systems Security, Cryptographic Protocols, Threat Management, Vulnerability Assessments, Vulnerability, Cyber Security Assessment, Vulnerability Scanning, Threat Detection, Cloud Security, Key Management, Asset Protection, Security Awareness, Gap Analysis
★ 4.6 (40) · Beginner · Course · 1 - 4 Weeks