Open Source Tech Stack Posted by By Daniel Ellis 05/02/2026 I’ve been putting together a list of software applications that would be suitable for MSPs to support as part of a tech-stack that’s purely open source. Contributions are welcomed (contact me!), so treat this page as permanently work-in-progress. Applications CurrentPotential EquivalentNotesMicrosoft OfficeOpen OfficeMicrosoft SharePointNextCloudMicrosoft ExchangeMailcowTelephonyFreePBXNASTrueNAS Security CurrentPotential EquivalentNotesFirewallpfSenseIdentity ManagementSamba Active DirectoryAdd Keycloak to include web apps, VPNs & more Support CurrentPotential EquivalentNotesOS DeploymentFOGI’ve not tested this one yetRemote MonitoringZabbixSIEM / Remote LoggingGraylogRMMTactical RMMIncludes MeshCentral to provide remote support.Remote SupportRustDeskTicketingZammad