Operating Systems

Windows

Download Windows 10 21h1 x86 (3.9G)
Download Windows 10 1511 x86 (2.7G)
Download Windows 10 1507 x64 (3.3G)
Download Windows 7 SP1 x86 (2.4G)
Download Windows XP SP3 x86 (589.1M)
Download Windows 98 SE (622.8M)

Linux

Download Ubuntu Linux 20.04 AMD64 (2.7G)

Software

Download Gravity Sandbox (103M)