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: Web Content Accessibility Guidelines, Web Design, Usability, HTML and CSS, Web Design and Development, Hypertext Markup Language (HTML), Typography, Color Theory, Semantic Web
★ 4.7 (12) · Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Computational Logic, Theoretical Computer Science, System Requirements, Functional Specification, Agentic systems, Requirements Analysis, Systems Analysis, Verification And Validation, Mathematical Modeling, Control Systems, Linear Algebra, Mathematical Theory & Analysis, Applied Mathematics, Numerical Analysis
★ 3.4 (11) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: CI/CD, Continuous Deployment, Continuous Integration, Continuous Delivery, Application Deployment, Build Tools, Cloud Deployment, Application Performance Management, Test Automation, Containerization, System Monitoring, ASP.NET, Unit Testing, Release Management, Version Control
★ 4.8 (17) · Intermediate · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Digital Transformation, Digital Marketing, Marketing, Digital Brand Strategy, Strategic Marketing, Digital Marketing Tools, Marketing Strategies, Product Marketing, Market Dynamics, Consumer Behaviour, Customer Engagement, Earned Media, Marketing Channel, Promotional Strategies, E-Commerce, Shared Media, Brand Management, Product Development, Revenue Management, Content Creation
★ 4.6 (10) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Red Hat Enterprise Linux, Command-Line Interface, Linux Administration, Linux Commands, User Accounts, User Provisioning, Linux, Operating System Administration, Enterprise Application Management, Software Installation, System Configuration, Systems Administration, Security Controls, Control Panels, File Management, System Monitoring, User Interface (UI)
★ 5 (14) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Power BI, Data Analysis Expressions (DAX), Data Modeling, Star Schema, Database Design, Data Security, Data Visualization Software, Spreadsheet Software, Performance Tuning, Data Access, Performance Improvement, Model Optimization, Data Manipulation
★ 4.9 (9) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: SketchUp (3D Modeling Software), AutoCAD, Architectural Drawing, 3D Modeling, 3D Assets, Visualization (Computer Graphics), Design Software, Computer Graphics
★ 5 (30) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Linux, Linux Administration, File Systems, Remote Access Systems, Operating System Administration, Linux Commands, File Management, System Configuration, Unix, Software Installation, Command-Line Interface, Operating Systems, Unix Commands, Virtualization and Virtual Machines, Systems Administration, Authorization (Computing), Virtualization, Virtual Machines, User Accounts
★ 4.8 (8) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Visualization, Web Scraping, Data Presentation, Data-Driven Decision-Making, SQL, Data Visualization Software, Database Systems, Pandas (Python Package), NumPy, Data Analysis, Databases, Data Manipulation, Database Management, Query Languages, Python Programming, Data Processing, Data Wrangling, Programming Principles
★ 4.2 (9) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Frontend Integration, Spring Boot, Configuration Management, API Gateway, JUnit, Java Programming, Enterprise Application Management, Java, Test Tools, Unit Testing, Application Programming Interface (API), Development Testing, Software Design Patterns, Authentications
Advanced · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Tidyverse (R Package), Data Import/Export, R (Software), Data Wrangling, R Programming, Data Manipulation, Data Analysis, Ggplot2, Relational Databases, Data Transformation, Data Cleansing, grep, Programming Principles
★ 4.1 (13) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Operating Systems, Operating System Administration, Technical Support, System Support, Technical Support and Services, Remote Access Systems, Debugging, Issue Tracking, Performance Tuning, Software Installation, Patch Management, Microsoft Office
★ 5 (10) · Beginner · Course · 1 - 4 Weeks