1. Chef - All automation 2. Puppet - All automation 3. Appdynamic 4. AWS 5. Azure 6. IBM softlayer 7. GCP 8. Jenkins - Built automation 9. Ansible - All automation 10. Terraform - Cloud automation 11. Splunk - Monitoring 12. Vagrant - Server related automation 13. Docker - Imaging process 14. Resolvesystems - Infra automation 15. TFS - Team foundation server 16. Datadog 17. Prometheus 18. Monit 19. Supervisor 20. Sensu monitoring 21. Icingo 22. ELK 23. Jira customisation 24. Confluence administration 25. Salesforce administration 26. Sharepoint administration 27. Mysql administration 28. Redis administration 29. Mongodb administration 30. Rabbitmq 31. Cassandra administration 32. Load balancing concepts 33. AWS API management