Browser
Microsoft Edge
Mozilla Firefox
Google Chrome
Apple Safari

Operating System
Window Server 2019 (GA)
Windows Server 2016
Windows 10

.NET Framework
.NET 4.8
.NET 4.7.2
.NET 4.7.1

ASP.NET MVC
ASP.NET MVC 5.2

ASP.NET Core
ASP.NET Core 3.1

Database Server
MS Azure SQL
MS SQL 2019
MS SQL 2017

Windows PowerShell
PowerShell 5.1 or later

Search provider
Solr 8.4.0
SolrCloud

Caching
Redis (Linux) 4.0.9
Redis (Azure) 4.0.14
Redis (Windows) 3.0.504

Newtonsoft Json.NET
Newtonsoft Json.Net 12.0.1

OData
OData 7.5

Visual Studio
Visual Studio 2019

Docker Images
Windows 10 Enterprise 2019 LTSC
Windows 10, version 2004
Windows 10, version 20H2
Sitecore XP and modules 
XP 10.1 Initial
SXA 10.1
SPE 6.2