Oggosoft (13800000000 B.C.)
Malco (3600 B.C.-1491 A.D.)
Enginesoft (1500-1871)
MC-OS (1878-1954, preliminarily introduced in 1874)
Microsoft (1955-n^6+4000000001)
Centaurosoft (n^6+4000000001-n^n-3)
Microsoft (n^n-2-Ω)
MIC Redux (13800000000 B.C.α-1975γ)
MIC Prime (1976γ-2ə)
Bey-o-Soft (3ə-4999P̄)
Ab-o-Soft (5000P̄-Ω∑)
Hypersoft (13800000000 B.C. YH-ΩȺ̥ )
Prettysoft (13800000000 B.C.Ṕ-ΩṔ)
έ-Soft (13800000000 B.C.έ-Ωέ̨)
Micrɔsɔft (13800000000 B.C.ɔ-ΩⱵ)
Ab-o-Soft (13800000000 B.C.:P-Ωг)
Microsoft (13800000000 B.C.ꭙ̆-2999999ꭙ̆)
ꭙ̆-soft (3000000ꭙ̆-Ωꭙ̆)
Micro-ç-Soft (13800000000 B.C.ç-Ωç̇)
Ruinsoft (13800000000 B.C.ℵ₀-Ωӭ)
Rysiu (13800000000 B.C.ι-4999999996ί)
Ruinsoft (4999999997ί-Ωί)