LocalStack provides an easy-to-use test/mocking framework for developing Cloud applications.Currently, the focus is primarily on supporting the AWS cloud stack.  you can run your Lambda functions, store data to DynamoDB tables, feed events through Kinesis streams, put your application behind an API Gateway, and much more. And all this happens on your local machine, without ever talking to the cloud.

LocalStack -  A fully functional local AWS cloud stack. Develop and test your cloud apps offline!

CloudStack CE is an open source Infrastructure-as-a-Service (IaaS) software platform, which enables users to build, manage and deploy compute cloud environments. 

 The <A HREF="http://cloud.com/" target="_blank">Cloud.com</A> approach to cloud computing is a new approach to how companies can quickly and easily build, manage and deploy private and public clouds. The Cloud.com CloudStack provides a turnkey solution for delivering virtual datacenters as a service—delivering all of the essential components used to build, deploy and manage multi-tier and multi-tenant cloud applications in a simple to install software package. 
 
 By using Cloud.com Cloud Stack as the foundation for infrastructure clouds, datacenter operators can quickly and easily build cloud services within their existing infrastructure to offer on-demand, elastic cloud services. Additional tools simplifies Administration, Security, Billing.

CloudStack CE is an open source Infrastructure-as-a-Service (IaaS) software platform, which enables users to build, manage and deploy compute cloud environments.

CloudStack - Infrastructure-as-a-Service (IaaS) software platform

The FOSS-Cloud is a Software, which enables you, to build your own Private or your Public-Cloud. 
The FOSS-Cloud environment (software and hardware) is an integrated and redundant server infrastructure to provide cloud-Services, Windows or Linux based SaaS, Terminal Server, Virtual Desktop Infrastructure (VDI) or virtual server-environmens. It makes virtual machines available, which can be accessed from internally as well as from the Internet. FOSS-Cloud covers all of the aspects of an Open Source IT environment. 

The FOSS-Cloud is a Software, which enables you, to build your own Private or your Public-Cloud. 
The FOSS-Cloud environment (software and hardware) is an integrated and redundant server infrastructure to provide cloud-Services, Windows or Linux based SaaS, Terminal Server, Virtual Desktop Infrastructure (VDI) or virtual server-environmens. It makes virtual machines available, which can be accessed from internally as well as from the Internet. 

FOSS-Cloud - Virtualization- and Cloud-Services 

OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface. 

 OpenStack Compute (Nova): Manages large networks of virtual machines. It is designed to manage and automate pools of compute resources and can work with widely available virtualization technologies, as well as bare metal and high-performance computing (HPC) configurations. 

 OpenStack Storage (Swift): Object and Block storage for use with servers and applications. Object Storage is ideal for cost effective, scale-out storage. It provides a fully distributed, API-accessible storage platform that can be integrated directly into applications or used for backup, archiving and data retention. 

 OpenStack Networking: Pluggable, scalable, API-driven network and IP management. Like other aspects of the cloud operating system, it can be used by administrators and users to increase the value of existing datacenter assets. 
 
 OpenStack Image Service (Glance): Provides discovery, registration, and delivery services for virtual disk images.

OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface.

OpenStack - Software for building Private and Public Clouds

OpenNebula provides solution for building and managing virtualized enterprise data centers and cloud infrastructures to enable on-premise IaaS clouds. OpenNebula interoperability makes cloud an evolution by leveraging existing IT assets, protecting your investments, and avoiding vendor lock-in. penNebula was designed to address the requirements of business use cases from leading companies and across multiple industries, such as Hosting, Telecom, eGovernment, Utility Computing and lot more. 
 OpenNebula can be primarily used as a virtualization tool to manage your virtualized infrastructure in the data center or cluster, which is usually referred as Private Cloud. OpenNebula supports Hybrid Cloud to combine local infrastructure with public cloud-based infrastructure, enabling highly scalable hosting environments. OpenNebula also supports Public Clouds by providing Cloud interfaces to expose its functionality for virtual machine, storage and network management. 
 OpenNebula orchestrates your existing storage, networking, virtualization, monitoring, and security platforms to enable the dynamic placement of multi-tier services.

OpenNebula provides solution for building and managing virtualized enterprise data centers and cloud infrastructures to enable on-premise IaaS clouds. OpenNebula interoperability makes cloud an evolution by leveraging existing IT assets, protecting your investments, and avoiding vendor lock-in. penNebula was designed to address the requirements of business use cases from leading companies and across multiple industries, such as Hosting, Telecom, eGovernment, Utility Computing and lot more.

OpenNebula - Data Center Management Solution

Eucalyptus is open source software for building Amazon Web Services-compatible private and hybrid clouds. The cloud software pools together compute, network, and storage resources within your IT environment to create on-demand, self-service private cloud resources. 

Eucalyptus - Scalable cloud software for IT and DevOps

Synnefo is a complete open source cloud stack written in Python that provides Compute, Network, Image, Volume and Storage services, similar to the ones offered by AWS. Synnefo manages multiple Ganeti clusters at the backend for handling low-level VM operations and uses Archipelago to unify cloud storage. To boost 3rd-party compatibility, Synnefo exposes the OpenStack APIs to users.

Synnefo - Open source Cloud Software, Used to create massively scalable IaaS clouds

openQRM a web-based open source datacenter management and cloud computing platform that integrates flexibly with your existing datacenter components. openQRM supports the all major virtualization technologies. It automates provisioning, virtualization, storage and configuration management, and it takes care of high-availability. A self-service cloud portal with integrated billing system enables end-users to request new managed servers and application stacks on-demand.

openQRM - Datacenter Management and Cloud Computing Platform

Scalr is a pretty darn good open source cloud management tool. It provides both an automation framework and a web interface (where is this volume mounted) for managing infrastructure on the cloud, like EC2 and GCE. It supports multi-cloud and it is integrated into Opscode Chef, for configuration management.

Scalr - Cloud Management Software

Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions. Using the concepts of "labels" and "pods", it groups the containers which make up an application into logical units for easy management and discovery.


Kubernetes -  Container Cluster Manager

Dasein Cloud (pronounced "da z-eye-n") is a Java-based cloud abstraction layer that enables programmers to build applications under a "write-once, run against any cloud" philosophy. It provides an abstract model under which most IaaS and some PaaS services can be modeled. Developers write applications to the Dasein Cloud model and it is then translated into the underlying cloud provider model. 

Dasein Cloud - Open Source Cloud Abstraction Library

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LocalStack - A fully functional local AWS cloud stack. Develop and test your cloud apps offline!