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: Scientific Visualization, Data Visualization Software, Visualization (Computer Graphics), Statistical Visualization, Computer Displays, Data Presentation, Time Series Analysis and Forecasting, Display Devices, Scalability, Data Validation, Computer Graphics, 3D Modeling, Medical Imaging, Computer Graphic Techniques
★ 5 (7) · Intermediate · Course · 1 - 3 Months

Oracle AI Database
Skills you'll gain: SQL, Oracle Databases, Database Management, Oracle Cloud, Database Design, Database Development, Relational Databases, Databases, Query Languages, Data Access, User Accounts, Cloud Management, Data Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Oracle Databases, Oracle SQL Developer, Database Design, Database Software, Database Administration, Database Architecture and Administration, Database Management, Database Management Systems, Performance Tuning, Data Storage, SQL, Network Administration, Memory Management, User Accounts
★ 5 (20) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Web Applications, Web Frameworks
★ 4.6 (10) · Intermediate · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Virtual Networking, Network Troubleshooting, Data Centers, Software-Defined Data Center (SDDC), vSphere Networking and Storage, Network Switches, Cloud Services, iSCSI Configuration, Virtualization, Cloud Computing, Network Architecture, Virtual Machines, Computer Networking, OSI Models, Computing Platforms, TCP/IP, Network Protocols, Server Administration, Networking Hardware, Microsoft Windows
Beginner · Specialization · 3 - 6 Months

The Expert Academy
Skills you'll gain: Consultative Selling, B2B Sales, Enterprise Sales, Negotiation, Matrix Management, Conflict Management, Sales Strategy, Persuasive Communication, Sales, Prospecting and Qualification, Stakeholder Engagement, Sales Management, Rapport Building, Professional Development, Communication, Stakeholder Communications, Psychology, Business Communication
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Metasploit, Brute-force attacks, System Configuration, General Networking, Network Security, Penetration Testing, Wireless Networks, Exploitation techniques, Intrusion Detection and Prevention, Linux, Vulnerability Scanning, Linux Commands, Encryption, Network Analysis, Software Installation, Virtual Machines
Intermediate · Course · 1 - 3 Months

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Vibrations, Matlab, Engineering Analysis, Mechanical Engineering, Mechanical Design, Mathematical Software, Applied Mathematics, Mechanics, Differential Equations, Mathematical Modeling, Control Systems
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Linux, Linux Administration, Package and Software Management, Software Installation, Open Source Technology, Computing Platforms, Operating Systems, Development Environment, Desktop Support
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Network Analysis, Statistical Modeling, Bayesian Network, Applied Machine Learning, R (Software), R Programming, Social Network Analysis, Statistical Methods, Simulations, Network Model, Statistical Analysis, Probability & Statistics, Statistical Programming, Probability Distribution, Sampling (Statistics), Data Visualization, Machine Learning, Statistical Hypothesis Testing
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Software Documentation, Engineering Documentation, Technical Documentation, Model Training, Software Design Documents, Technical Writing, Generative Model Architectures, Technical Communication, Restful API
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Accrual Accounting, Accruals, QuickBooks (Accounting Software), User Accounts, Payroll Reporting, Record Keeping, Payroll Systems, Payroll Tax, Accounting Records, Accounts Payable and Receivable, Ledgers (Accounting), Reconciliation, Merchant Services, Accounting Software, Payroll, Vendor Relationship Management, Accounts Receivable, Financial Reporting, Payroll Administration, Bookkeeping
Intermediate · Specialization · 3 - 6 Months