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 California San Diego
Skills you'll gain: Embedded Software, Internet Of Things, Unit Testing, Software Design, System Testing, Software Design Documents, Software Development, Technical Communication, Software Documentation, Mobile Development Tools, Technical Design, Systems Design, System Design and Implementation, Ideation, Embedded Systems, Innovation, Communication Systems, System Implementation, Systems Integration
★ 3.7 (10) · Mixed · Course · 1 - 4 Weeks

Northeastern University
Skills you'll gain: Operations Research, Applied Mathematics, Mathematical Software, Operational Analysis, Linear Algebra, Numerical Analysis, Mathematical Modeling, Algorithms, Model Optimization, Algebra
★ 4.9 (8) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Operations, Cybersecurity, Cyber Threat Intelligence, Cyber Attacks, Cyber Threat Hunting, IT Security Architecture, Cyber Security Strategy, Threat Detection, Network Security, Security Information and Event Management (SIEM), Security Management, MITRE ATT&CK Framework, Security Controls, Incident Response, Vulnerability Assessments, Cloud Security, Vulnerability Management, Vulnerability, Encryption, Configuration Management
★ 4.2 (12) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Ggplot2, Plot (Graphics), Data Visualization, Interactive Data Visualization, Statistical Visualization, Data Visualization Software, Exploratory Data Analysis, Data Presentation, R (Software), Scatter Plots, Tidyverse (R Package), R Programming, Box Plots, Graphing, Histogram, Data Wrangling, Data Manipulation
★ 4.7 (20) · Mixed · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: DeepSeek API, Deepseek, User Interface (UI), LLM Application, AI Workflows, AI Integrations, Human Computer Interaction, Agentic Workflows, Retrieval-Augmented Generation, AI Product Strategy, Embeddings, Application Deployment, Case Studies
★ 4 (10) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blogs, Search Engine Optimization, Content Performance Analysis, Content Marketing, Brand Loyalty, Branding, Keyword Research, Content Creation, Web Analytics, Customer Engagement, Thought Leadership, Customer Relationship Building, Promotional Strategies, Content Management Systems, Business Marketing
★ 4.6 (23) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Blockchain, Front-End Web Development, Application Development, Web Development, Transaction Processing, Development Testing, Frontend Integration, Cryptography, FinTech, Emerging Technologies, Software Design, HTML and CSS, Software Architecture, Test Script Development, User Interface (UI) Design, Experience Design, Javascript, Application Deployment, Payment Systems, Data Management
★ 4.8 (24) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, OpenAI API, ChatGPT, Token Optimization, Application Programming Interface (API), API Testing, AI Integrations, Authentications, Context Engineering, Large Language Modeling, Key Management, Model Optimization, Performance Tuning
★ 4.1 (9) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Wireframing, Figma (Design Software), Design Reviews, Collaborative Software, Design Software, Digital Design
★ 4.7 (13) · Beginner · Guided Project · Less Than 2 Hours

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

Skills you'll gain: IBM Cloud, Cryptography, Cryptographic Protocols, Algorithms, Python Programming, Linear Algebra, Software Installation, Development Environment, Application Frameworks
★ 4.1 (12) · Beginner · Course · 3 - 6 Months

Packt
Skills you'll gain: Ruby (Programming Language), File I/O, Object Oriented Programming (OOP), Ruby on Rails, Debugging, Test Tools, Application Design, Code Reusability, Programming Principles, Test Case, Software Documentation, Development Environment, Integrated Development Environments, Computer Programming, Data Structures, Apple Xcode, Web Development, Computational Logic, Software Installation, Technical Documentation
★ 4.4 (18) · Intermediate · Specialization · 3 - 6 Months