Very good “100 Open Source Apps for Windows” list: http://www.datamation.com/open-source/100-open-source-apps-for-windows-1.html

These are some of the Open Source Software project I am, or will be, investigating. SourceForge.net is the web site I use the most to find Open Source solutions.

• Moodle – Learning Management System (LMS) [2016-11-07]
  https://moodle.org/

• iTop – ITSM & CMDB OpenSource [2015-01-11]
  http://www.combodo.com/itop
  http://sourceforge.net/projects/itop/

• CMDBuild – CMDB for IT Asset Management [2015-01-11]
  http://www.cmdbuild.org/en
  http://sourceforge.net/projects/cmdbuild/

• openMAINT – Property & Facility Management [2015-01-11]
  http://www.openmaint.org/en
  http://sourceforge.net/projects/openmaint/

• Request Tracker – The open-source enterprise grade ticketing system [2016-12-20]
  https://bestpractical.com/

• TGUP – The Great Unattended Project https://sourceforge.net/projects/tgup/#more

• Nagios https://sourceforge.net/projects/nagios/#more

• Web KeePass Password Safehttps://sourceforge.net/projects/webkeepass/#more

• LDAPAdminhttps://sourceforge.net/projects/ldapadmin/#more

• GenerateSignatureFromLDAPhttps://sourceforge.net/projects/gensignfromldap/#more

• Osmius https://sourceforge.net/projects/osmius/#more