Git is a version control system for source code management. It allows multiple people to work on the same code base at the same time. Git tracks changes made to the code and allows you to revert back to any previous state of the project. Visit the official website at https://git-scm.com/ to download Git and find resources for learning how to use it.

Jenkins is an open-source automation server for continuous integration and continuous deployment (CI/CD). It helps automate the parts of software development related to building, testing, and deploying, facilitating continuous integration and continuous delivery. Visit the official website at https://www.jenkins.io/ to download Jenkins and find resources for learning how to use it.

Ansible is an open-source automation tool for configuration management, application deployment, and task automation. It uses a simple syntax written in YAML called playbooks. Ansible is agentless, meaning it doesn't require any software installed on remote nodes. Visit the official website at https://www.ansible.com/ to download Ansible and find resources for learning how to use it.

Docker is a containerization platform for packaging, distributing, and running applications. It allows you to separate your applications from your infrastructure so you can deliver software quickly. Visit the official website at https://www.docker.com/ to download Docker and find resources for learning how to use it.

Kubernetes is an open-source container orchestration platform for automating deployment, scaling, and management of containerized applications. It groups containers that make up an application into logical units for easy management and discovery. Visit the official website at https://kubernetes.io/ to download Kubernetes and find resources for learning how to use it.

Chef is a configuration management tool for managing infrastructure as code. It automates how you build, deploy, and manage your infrastructure. Your infrastructure becomes as versionable, testable, and repeatable as application code. Visit the official website at https://www.chef.io/ to download Chef and find resources for learning how to use it.

Puppet is an open-source configuration management tool for managing infrastructure as code. It allows you to manage your servers and automate tasks like installing packages and updating configuration files. Visit the official website at https://puppet.com/ to download Puppet and find resources for learning how to use it.

Terraform is an open-source infrastructure as code tool for building, changing, and versioning infrastructure safely and efficiently. It can manage existing and popular service providers as well as custom in-house solutions. Visit the official website at https://www.terraform.io/ to download Terraform and find resources for learning how to use it.

Nagios is an open-source monitoring system for network and system monitoring. It offers monitoring and alerting services for servers, switches, applications, and services. Visit the official website at https://www.nagios.org/ to download Nagios and find resources for learning how to use it.

Grafana is an open-source platform for monitoring and analyzing data from various sources. It provides a powerful and elegant way to create, explore, and share dashboards and data with your team and the world. Visit the official website at https://grafana.com/ to download Grafana and find resources for learning how to use it.

Prometheus is an open-source systems monitoring and alerting toolkit. It is designed for reliability, to be the system you go to during an outage to allow you to quickly diagnose problems. Visit the official website at https://prometheus.io/ to download Prometheus and find resources for learning how to use it.

ELK Stack is an open-source stack for log management and analytics. It stands for Elasticsearch, Logstash, and Kibana. Elasticsearch is a search and analytics engine. Logstash is a server-side data processing pipeline that ingests data from multiple sources simultaneously. Kibana lets users visualize data with charts and graphs in Elasticsearch. Visit the official website at https://www.elastic.co/what-is/elk-stack to download ELK Stack and find resources for learning how to use it.

Splunk is a log management and analytics platform. It can search, monitor, and analyze machine-generated big data, via a web-style interface. Visit the official website at https://www.splunk.com/ to download Splunk and find resources for learning how to use it.

JIRA is a project management and issue tracking tool for software development teams. It allows teams to plan, track, and manage their agile and software development projects. Visit the official website at https://www.atlassian.com/software/jira to download JIRA and find resources for learning how to use it.

Slack is a collaboration tool for teams to communicate and share files. It provides channels for group discussions and allows for private messages to share information, files, and more all in one place. Visit the official website at https://slack.com/ to download Slack and find resources for learning how to use it.

GitHub is a web-based hosting service for version control using Git. It provides a platform for collaboration on projects and code sharing. Visit the official website at https://github.com/ to sign up for GitHub and find resources for learning how to use it.

Bitbucket is a web-based hosting service for version control using Git and Mercurial. It is designed for professional teams and provides features like pull requests, branching, and inline commenting. Visit the official website at https://bitbucket.org/ to sign up for Bitbucket and find resources for learning how to use it.

CircleCI is a continuous integration and deployment platform for web and mobile applications. It automates the build, test, and deploy process, allowing developers to focus on their code. Visit the official website at https://circleci.com/ to sign up for CircleCI and find resources for learning how to use it.

Travis CI is a continuous integration and deployment platform for open-source and private projects. It integrates with GitHub and supports a variety of languages. Visit the official website at https://travis-ci.com/ to sign up for Travis CI and find resources for learning how to use it.

AWS CodePipeline is a continuous delivery service for building, testing, and deploying applications on AWS. It automates the stages of your release process, from build to deploy. Visit the official website at https://aws.amazon.com/codepipeline/ to sign up for AWS CodePipeline and find resources for learning how to use it.

AWS CodeDeploy is an automated deployment service for deploying applications on EC2 instances and other resources. It automates software deployments to a variety of compute services such as Amazon EC2, AWS Fargate, AWS Lambda, and your on-premises servers. Visit the official website at https://aws.amazon.com/codedeploy/ to sign up for AWS CodeDeploy and find resources for learning how to use it.

AWS CodeCommit is a secure, scalable, and managed source control service that hosts private Git repositories. It eliminates the need for you to operate your own source control system or worry about scaling its infrastructure. Visit the official website at https://aws.amazon.com/codecommit/ to sign up for AWS CodeCommit and find resources for learning how to use it.

Azure DevOps is a suite of DevOps tools for planning, development, testing, and deployment on Azure. It provides developer services for support teams to plan work, collaborate on code development, and build and deploy applications. Visit the official website at https://azure.microsoft.com/en-us/services/devops/ to sign up for Azure DevOps and find resources for learning how to use it.

GitLab is a web-based Git repository manager that includes CI/CD pipelines, wiki, and issue tracking. It provides a complete DevOps platform, delivered as a single application. Visit the official website at https://about.gitlab.com/ to sign up for GitLab and find resources for learning how to use it.

Jenkins X is a Kubernetes-native CI/CD platform for cloud-native applications. It provides pipeline automation, built-in GitOps, and preview environments to help teams collaborate and accelerate their software delivery. Visit the official website at https://jenkins-x.io/ to download Jenkins X and find resources for learning how to use it.

Spinnaker is an open-source continuous delivery platform for deploying and managing applications in cloud environments. It combines a powerful and flexible pipeline management system with integrations to the major cloud providers. Visit the official website at https://www.spinnaker.io/ to download Spinnaker and find resources for learning how to use it.

Vagrant is a tool for building and managing virtual machine environments in a single workflow. It provides a simple and easy to use command-line client for managing these environments, and an interpreter for the text-based definitions of what each environment looks like. Visit the official website at https://www.vagrantup.com/ to download Vagrant and find resources for learning how to use it.

Packer is an open-source tool for creating identical machine images for multiple platforms. It automates the creation of any type of machine image. It embraces modern configuration management by encouraging you to use automated scripts to install and configure the software within your Packer-made images. Visit the official website at https://www.packer.io/ to download Packer and find resources for learning how to use it.

Consul is a service networking solution to automate network configurations, discover services, and enable secure connectivity across any cloud or runtime. It provides a full featured control plane with service discovery, configuration, and segmentation functionality. Visit the official website at https://www.consul.io/ to download Consul and find resources for learning how to use it.