This is a documentation I’ve made time ago searching some open source tools and platforms(& freeware), I hope It can be useful to you:

  • Ticketing

https://www.graylog.org/ Monitoring / Open source

Discover and resolve issues faster. Keep end users happy with less downtime and better performance by proactively monitoring key indicators and exceptions across the entire stack.

https://www.happyfox.com/ Ticketing / private

Meet HappyFox, a practical help desk and customer support software solution. Reduce chaos and bring order to your support process with a robust support ticket system, self-service knowledge base and community forums.

  • System Centre Configuration Manager (SCCM)

http://www.meshcommander.com/ SCCM / Open Source

is an entirely web based tool for remote management of your Intel® AMT computers.

https://www.spiceworks.com/ SCCM / Open Source

Free online IT tools to help sysadmins, network engineers, technicians, and others set up and troubleshoot networks and more.

https://www.lansweeper.com/ SCCM / Free less than 100 hosts

Network Inventory, Asset Management, Deployment, Help Desk and much more…

https://www.openstack.org/ Cloud / Open Source

OpenStack is a free and open-source software platform for cloud computing, mostly deployed as infrastructure-as-a-service, whereby virtual servers and other resources are made available to customers

https://www.proxmox.com/en/ Cloud - Virtualization / Open Source

Proxmox VE is a complete open-source platform for enterprise virtualization. With the built-in web interface you can easily manage VMs and containers, software-defined storage and networking, high-availability clustering, and multiple out-of-the-box tools on a single solution.

https://tunnelblick.net/ VPN / Open Source

Tunnelblick is a free, open source graphic user interface for OpenVPN on OS X and macOS. It provides easy control of OpenVPN client and/or server connections.

https://www.nagios.org/ IT Monitor / Open Source

The Industry Standard In IT Infrastructure Monitoring.

https://www.zabbix.com/ IT Monitor / Open Source

Zabbix is the ultimate enterprise-level software designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices. Zabbix is Open Source and comes at no cost.

http://www.andama.org/ RD / Open Source

Andama is an open source remote desktop software, with client side encryption and privacy in mind.

https://wiki.x2go.org/doku.php RD / open source

X2Go enables you to access a graphical desktop of a computer over a low bandwidth (or high bandwidth) connection.

https://ulterius.io/ RD / Open Source Task Manager, Command Prompt, PowerShell, and More.

https://www.nomachine.com/ RD / Freeware

Go from your desktop to any NoMachine-enabled computer at the speed of light. Thanks to our NX technology, NoMachine is the fastest and highest quality remote desktop you have ever tried. Get to any computer in the world in just a few clicks! Take what’s important where you go and share with who you want! NoMachine is your own personal server, private and secure. Did we say NoMachine is free? No strings attached.

http://guacamole.apache.org/ RD / Open source

http://www.freerdp.com/ RD / open source

  • More about Remote Desktop:

https://en.wikipedia.org/wiki/Comparison_of_remote_desktop_software

http://www.rabbitmq.com/ Deployed / open source

RabbitMQ is the most widely deployed open source message broker.

https://bloonix-monitoring.org/ System Monitoring / open source

The monitoring solution is a product of the hosting provider Bloonix, located in Germany.

http://www.openldap.org/ LDAP / open source

OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol.

https://directorymonitor.com/

Directory Monitor can be used for the surveillance of directories and/or network shares and will notify you of file changes, access, deletions, modifications, new files and inactivity in real-time.

  • others:

http://ec.europa.eu/eurostat/statistics-explained/index.php/Main_Page

Statistics Explained, your guide to European statistics. Statistics Explained is an official Eurostat website presenting statistical topics in an easily understandable way. Together, the articles make up an encyclopedia of European statistics for everyone, completed by a statistical glossary clarifying all terms used and by numerous links to further information and the latest data and metadata, a portal for occasional and regular users.

AI https://www.tensorflow.org/

https://www.inputdirector.com/ Sharing Mouse / open source

Puppet: https://learn.puppet.com/?_ga=2.11665392.537398465.1511124414-1630578946.1511124414

CloudFlare:

Cloudflare acelera y protege millones de sitios web, API, servicios de SaaS, y otros recursos conectados a Internet. Nuestra tecnología Anycast nos permite ampliar las ventajas con cada servidor que añadimos a nuestra creciente red de centros de datos.

https://www.univention.com/

The Univention App Center contains an ever-growing number of software solutions from different developers for companies and public institutions. These apps can be simply installed via the App Center, integrated in your in-house IT, and conveniently managed via UCS’ central management system.

https://www.opensource-socialnetwork.org

Open Source Social Network (Ossn) is a rapid development social networking software written in PHP. It allows you to make a social networking website. Ossn can be use to build different types of social apps.

https://zammad.com/

Personalized and quick answers will satisfy your customers. With Zammad you can manage and organize your team and your tickets to make your customer support draw a smile on your customers face.

https://rocket.chat/

Rocket.Chat is the leading free open source team chat Slack alternative.

Let Chat

https://www.tecmint.com/install-lets-chat-on-centos-ubuntu-debian/

Chartjs http://www.chartjs.org/ Simple yet flexible JavaScript charting for designers & developers

Python IDE open source http://thonny.org/

Text editor https://atom.io/

The Official home of the DB Browser just for SQLite http://sqlitebrowser.org/

RH Customer Portal ( Download RH iso ):

https://access.redhat.com/downloads/content

System backups:

www.urBackups.org

https://blogs.technet.microsoft.com/canitpro/2015/07/22/step-by-step-installing-microsoft-azure-pack-for-windows-server/

How to create and design a database:

https://docs.oracle.com/cd/E15276_01/doc.20/e13677/data_modeling.htm#BABGBGBG

http://www.oracle.com/technetwork/developer-tools/datamodeler/downloads/index.html

FreeNass:

www.freenas.org

System backup open source:

www.Bacula.org

https://www.cyberciti.biz/open-source/awesome-backup-software-for-linux-unix-osx-windows-systems/

Kubernetes: https://kubernetes.io/ is an open-source system for automating deployment, scaling, and management of containerized applications.

Spinnaker: https://www.spinnaker.io/ is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence.

Some NoSQL platforms(document-oriented):

mongoDB CouchDB DynamoDB

Open Source Virtualization:

https://xenserver.org/open-source-virtualization-download.html

Open source web servers:

https://opensource.com/business/16/8/top-5-open-source-web-servers

IBM cognos analytics

https://www.cyberciti.biz/faq/install-use-setup-docker-on-rhel7-centos7-linux/

Setup oracle 12C on Docker:

https://dzone.com/articles/creating-an-oracle-database-docker-image

ClamavNet antivirus server open source:

https://www.clamav.net/

Firewall open source:

http://gufw.org/

Backup:

https://www.bareos.org/en/download.html

http://www.vmwarearena.com/download-link-for-all-versions-of-vmware-vsphere-client/

http://www.mustbegeek.com/difference-between-vsphere-esxi-and-vcenter/

https://developer.gnome.org/integration-guide/stable/desktop-files.html.en

How to setup a failover server (windows server):

https://www.manageengine.com/products/desktop-central/help/configuring_desktop_central/configuring_failover_server.html

Emtec terminal:

https://www.emtec.com/index.html

How to create new icons into Visio:

http://www.visguy.com/2009/09/11/visio-server-shape-icon-customization-tool/

https://www.meteor.com/

How to freenas:

https://www.windowscentral.com/how-to-set-up-freenas-home-file-server

Freenas and esxi vmware NFS:

https://www.virtualizationhowto.com/2017/05/configure-freenas-9-10-nfs-vmware-esxi-6-datastore/

http://tekbloq.com/2016/08/19/how-to-configure-nfs-on-freenas/

Mirroring freenas boot:

https://blog.brianmoses.net/2016/04/mirroring-the-freenas-usb-boot-device.html

Windows server 2016 validation:

https://msfreaks.wordpress.com/2016/10/06/convert-windows-server-2016-evaluation-to-licensed/

Monitoring systems:

https://nicolargo.github.io/glances/