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: Statistical Modeling, Exploratory Data Analysis, R Programming, Predictive Modeling, Sampling (Statistics), Statistical Hypothesis Testing, Tidyverse (R Package), Data Analysis, Data Modeling, Regression Analysis, Classification And Regression Tree (CART), Statistical Inference, Statistical Analysis, Rmarkdown, Data Preprocessing, Statistical Methods, Probability & Statistics, Model Evaluation, Machine Learning
Mixed · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Cloud Deployment, Cloud Applications, Application Deployment, API Gateway, OpenAI API, Model Deployment, Cloud Security, Application Programming Interface (API), AI Enablement, LLM Application, Web Servers, Application Performance Management, Distributed Computing, Debugging
Intermediate · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Virtualization, Virtual Machines, Hyper-V, Virtual Networking, VMware ESX Servers, Data Centers, Data Storage, Cloud Computing, Servers, Virtual Reality, iSCSI Configuration, Remote Access Systems, Computer Hardware
Build toward a degree
Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Application Security, Web Applications, Javascript, Web Development, Node.JS, Security Controls, Web Servers, Hypertext Markup Language (HTML), Java Programming
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: HTML and CSS, React.js, Front-End Web Development, Mockups, Web Design and Development, Web Development, Web Components, Figma (Design Software), Code Review, Application Deployment, Web Analytics and SEO, Database Development, Software Development, GitHub, Development Testing
Advanced · Course · 1 - 3 Months

Coursera
Skills you'll gain: TypeScript, Javascript, React.js, Debugging, Integrated Development Environments, Web Development Tools
Intermediate · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, HTML and CSS, Web Design and Development, Front-End Web Development, Web Design, Computer Programming
Intermediate · Course · 1 - 4 Weeks

Xi'an Jiaotong University
Skills you'll gain: Operating Systems, Computer Systems, Debugging, Microsoft Visual Studio, OS Process Management, Computer Hardware, C# (Programming Language), Computer Architecture, Object Oriented Programming (OOP), Programming Principles, Integrated Development Environments, Computational Logic, System Design and Implementation
Mixed · Course · 1 - 4 Weeks

The Pennsylvania State University
Skills you'll gain: Geographic Information Systems, Case Studies, Climate Change Programs, Systems Thinking, Design Thinking, Geospatial Information and Technology, Sustainable Design, Spatial Analysis, Collaborative Software, Decision Support Systems, Cultural Responsiveness
Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: React.js, Routing Protocols, JavaScript Frameworks, Frontend Performance, Web Content Accessibility Guidelines, UI Components, Debugging, Javascript, Context Management, User Flows, Authentications, Data Management
Advanced · Course · 1 - 3 Months

Skills you'll gain: Cross-Channel Marketing, Content Marketing, Marketing Analytics, Data Ethics, Marketing Effectiveness, Data-Driven Decision-Making, Marketing Strategies, Personalized Service, Marketing Automation, Content Strategy, Adobe Express, AI Personalization, Advertising Campaigns, Driving engagement, Social Media, Emerging Technologies, Market Research, Trend Analysis
Beginner · Course · 1 - 4 Weeks
West Virginia University
Skills you'll gain: Sales Territory Management, Sales Management, Sales, Marketing Budgets, Business Ethics, Sales Strategy, Legal Risk, Forecasting, Budgeting, Performance Analysis, Pareto Chart, Market Analysis
Beginner · Course · 1 - 4 Weeks