Top 10 DevOps Tools which are used in companies

Before and After DevOps

1. Git

• Open Source version control tool
• Decentralized source code management tool
• It is highly scalable
• Supports non-linear development
• Easy branching
• It is reliable as very contributor has his own local repo

Companies Using Git
    - Microsoft
    - amazom
    - Linked-in
    - accenture
    - Facebook
    - YAHOO!

2. Jenkins

• It is most famous continuous integration tool
• It is an open source tool with great community support
• It has 2000+ plugins to ease your work
• It is built with java and hence, it is portable to all the major platforms.

Companies Using Jenkins

   - pentaho

   - openstack

   - AngularJs

   - Capgemini

   - Luxoft

   - Linked-in

3. Selenium

• Software tools to automate web browsers.
• It is open source and mainly used for functional testing and regression testing.
• Supports different PL→ Java, Python, C#, PHP, Ruby, Perl, JavaScript.
• Support different OS→ windows, Mac, Linux, iOS, Android

Companies Using Selenium

   - Google

   - IBM

   - J.P.Morgan

   - Cognizant

   - salesforce

   - Fidelity

4. Docker

• Docker is a containerization platform Provides agility to SDLC
• Provides portability
• Provides security to deliver applications safely across the entire lifecycle.
• Helps in cost optimization
• Light weight alternative to VMs

Companies Using Docker

  - UBER

  - New Relic

  - PayPal

  - ebay

  - OXFORD

5. Puppet

• Most famous configuration management tool
• Used for deploying configuring and managing servers
• Has a master-slave architecture Open-source tool.
• Long commercial track record

Companies Using Puppet

   - CISCO

   - Raytheon

   - scrippsnetworks

   - TERADATA

6. Chef

• It is a configuration management tool
• Supports multiple platforms like AIX, RHEL/CentOS, FreeBSD and can be integrated with cloud-based platforms
• Open-source tool
• Active, smart and fast growing community support

Companies Using Chef

   - Mozilla Firefox

   - Expedia

   - facebook

   - hP

   - rockspace

7. Ansible

• It is an open source configuration management tool
• Supports push configuration
• It has a master slave architecture 
• It is completely agentless
• It uses simple syntax written YAML
• Batteries included

Companies Using Ansible

   - Capital One

   - VIASAT

   - NASA

8. Splunk

•  It is used to store, search, analyze and visualize the machine generated data
• It can ingest any type of data file
• Create knowledge objects for operational intelligence
• It monitors business metrics

Companies Using Splunk

   - CISCO

   - Facebook

   - IBM

   - BOSCH

   - Domino's

9. ELK

• It is a powerful collection of three open source tools: Elasticsearch, Logstash, and Kibana
• Logstash is the data collection pipeline tool
• Elasticsearch is a NoSQL database
• Kibana is a data visualization tool

Companies Using ELK

   - NETFLIX

   - accenture

   - Linked-in

10. Nagios

• It monitors and troubleshoot serve performance issues
• It allows us to plan for infrastructure upgrades before outdated systems cause failures
• It can be used to automatically fix problems when they are detected

Companies Using Nagios

   - COMCAST

   - YAHOO!

   - SONY

   - SIEMENS