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.

DeepLearning.AI
Skills you'll gain: Federated Learning, Fine-tuning, AI Security, Large Language Modeling, PyTorch (Machine Learning Library), Model Optimization, Information Privacy, LLM Application, Model Training, Distributed Computing, Machine Learning
★ 4.5 (16) · Beginner · Project · Less Than 2 Hours

LearnQuest
Skills you'll gain: Docker (Software), Containerization, Application Deployment, Data Persistence, Software Development, Virtualization, Application Security, Virtual Networking, Virtualization and Virtual Machines, Command-Line Interface
★ 3.3 (9) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Vector Databases, Embeddings, PostgreSQL, Relational Databases, SQL, Query Languages, NoSQL, Node.JS, Data Import/Export, Data Processing
★ 4.5 (24) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Management, Cloud Security, Application Security, Open Web Application Security Project (OWASP), Cloud Computing, Cloud Infrastructure, Cloud Applications, Identity and Access Management, Data Integrity, Secure Coding, DevSecOps, Security Awareness, Cloud Computing Architecture, Data Centers, Data Management, IT Security Architecture, General Data Protection Regulation (GDPR), Security Engineering, Cyber Risk, Service Level
★ 4.6 (14) · Advanced · Specialization · 1 - 3 Months

University of Colorado System
Skills you'll gain: Marketing Analytics, Data-Driven Marketing, Probability & Statistics, Regression Analysis, Data-Driven Decision-Making, Data Ethics, Statistical Analysis, Statistical Hypothesis Testing, Customer Insights, Analytical Skills, Customer Analysis, Customer Retention, Correlation Analysis, Descriptive Statistics, Data Analysis, Analytics, Statistical Visualization, Statistical Modeling, Predictive Analytics, Descriptive Analytics
★ 4.8 (13) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Extensible Markup Language (XML), Ajax, Extensible Languages and XML, Web Design and Development, Java Platform Enterprise Edition (J2EE), jQuery, Cascading Style Sheets (CSS), Data Validation, Web Applications, Scripting Languages, Javascript and jQuery, Web Development, Hypertext Markup Language (HTML), Middleware, Model View Controller, Web Services, Interoperability, Java, Computer Graphic Techniques, Scalability
★ 4.5 (74) · Beginner · Specialization · 3 - 6 Months

Google Cloud
Skills you'll gain: File Management, Cloud Storage, Collaborative Software, Google Workspace, Data Storage, Cloud Services, Document Management, Microsoft Office, Data Sharing
★ 4.3 (19) · Beginner · Project · Less Than 2 Hours

Skills you'll gain: Ajax, Build Tools, Object Oriented Design, Test Script Development, Web Development Tools, Software Design Patterns, Test Data, Scripting, Test Tools, Data Structures, Package and Software Management, Code Reusability, File I/O, Data Access, Automation, Cascading Style Sheets (CSS)
★ 4.4 (11) · Intermediate · Specialization · 3 - 6 Months

IE Business School
Skills you'll gain: Marketing Planning, Market Analysis, Strategic Marketing, Marketing Strategies, Market Research, Marketing, Marketing Management, Marketing Strategy and Techniques, Marketing Effectiveness, Product Marketing, Product Strategy, Marketing Communications, Market Opportunities, Case Studies, Customer Analysis, Competitive Analysis, Plan Execution, Target Market, Consumer Behaviour, Hotels and Accommodations
★ 5 (26) · Beginner · Course · 1 - 3 Months

DeepLearning.AI
Skills you'll gain: AI Orchestration, LLM Application, AI Workflows, OpenAI API, Agentic Workflows, Tool Calling, Generative AI Agents, Retrieval-Augmented Generation, Agentic systems, Data Pipelines
★ 4.5 (14) · Intermediate · Project · Less Than 2 Hours

Skills you'll gain: Oracle Databases, Database Administration, Relational Databases, Database Management Systems, Database Architecture and Administration, Data Import/Export, Database Theory, Patch Management, Memory Management, Database Systems, Multi-Tenant Cloud Environments, Database Software, Database Management, Software Installation, Performance Tuning, Server Administration, Data Maintenance, Query Languages, User Accounts, System Configuration
★ 4.7 (13) · Intermediate · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Data Visualization, Data Visualization Software, Tableau Software, Color Theory, Data Integration, Data Literacy, Data Presentation, Data Import/Export, Design Elements And Principles, Business Analytics, Data Science, Marketing Analytics
★ 4.8 (11) · Beginner · Course · 1 - 4 Weeks