Online Courses

Compare 25 online courses from Coursera, edX, Udemy & more — filter by subject, level, provider and price.

“system maintenance” × Clear all
25 courses
Application Support Specialist: Certification Practice Test Udemy
Application Support Specialist: Certification Practice Test
Certificate
USD 34.99
Teste prático CompTIA Linux Plus Certification Udemy
Teste prático CompTIA Linux Plus Certification
Certificate
USD 34.99
Vmware Certified Professional Desktop Managem Practice Exams Udemy
Vmware Certified Professional Desktop Managem Practice Exams
Certificate
USD 29.99
Complete Red Hat System Administration Boot Camp - RHCSA 9 Udemy
Complete Red Hat System Administration Boot Camp - RHCSA 9
Bootcamp
USD 199.99
MD-100 Windows Client: Exam-Ready Practice Tests Prep Udemy
MD-100 Windows Client: Exam-Ready Practice Tests Prep
MOOC / Non-credit
USD 19.99
VMware Certified Professional CMA Practice Tests Udemy
VMware Certified Professional CMA Practice Tests
MOOC / Non-credit
USD 29.99
Design and Install Fire Alarm (A-Z) NFPA Standard 72 & 2001 Udemy
Design and Install Fire Alarm (A-Z) NFPA Standard 72 & 2001
Certificate
USD 109.99
Perfect VoIP: Sell, Install, and Maintain with Confidence! Udemy
Perfect VoIP: Sell, Install, and Maintain with Confidence!
Certificate
USD 19.99
Windows 10 Avançado Udemy
Windows 10 Avançado
Certificate
USD 34.99
Security Intrusion Alarm systems: The complete Guide Udemy
Security Intrusion Alarm systems: The complete Guide
Certificate
USD 59.99
Tests for Palo Alto Networks Network Security Admin PCNSA Udemy
Tests for Palo Alto Networks Network Security Admin PCNSA
MOOC / Non-credit
USD 24.99
CompTIA Linux+ (LX0-103 and LX0-104) (Part 1 of 2) Udemy
CompTIA Linux+ (LX0-103 and LX0-104) (Part 1 of 2)
Certificate
USD 199.99
Técnico de Laboratório de Informática Udemy
Técnico de Laboratório de Informática
Certificate
USD 39.99
RHEL 8 - Camino a la Certificación RHCSA Udemy
RHEL 8 - Camino a la Certificación RHCSA
Certificate
USD 19.99
Simulado Certificação Prático LPIC-1 | Linux administrador Udemy
Simulado Certificação Prático LPIC-1 | Linux administrador
Certificate
USD 34.99
Linux Professional Institute LPIC-2 201-450 202-450Exam 2026 Udemy
Linux Professional Institute LPIC-2 201-450 202-450Exam 2026
Certificate
USD 19.99
Linux Professional Institute LPIC-1 102-500 Exam 2026 Udemy
Linux Professional Institute LPIC-1 102-500 Exam 2026
Certificate
USD 19.99
HVAC Interview Mastery: 500+ Conceptual Questions & Answers Udemy
HVAC Interview Mastery: 500+ Conceptual Questions & Answers
Certificate
USD 24.99
CompTIA A+ Core 1 (220-1201) 6 Exam Practice Tests Prep 2026 Udemy
CompTIA A+ Core 1 (220-1201) 6 Exam Practice Tests Prep 2026
Certificate
USD 19.99
OS Maintenance, Troubleshooting & Display Coursera
OS Maintenance, Troubleshooting & Display
Total Seminars MOOC / Non-credit
USD 49
Certified Data Engineer Associate Databricks Practice Exams Udemy
Certified Data Engineer Associate Databricks Practice Exams
Certificate
USD 29.99
LPIC-2 - Linux Engineer Exam 201-450 Udemy
LPIC-2 - Linux Engineer Exam 201-450
Certificate
USD 19.99
Introduction to HVAC Smart Tools Coursera
Introduction to HVAC Smart Tools
Interplay Learning MOOC / Non-credit
USD 49
Notion Masterclass für PARA, Zettelkasten und Wissenssystem Udemy
Notion Masterclass für PARA, Zettelkasten und Wissenssystem
Certificate
USD 199.99