Year2000 (ver 2.16) - Abandonware
TPPATCH (ver unknown) - Abandoned Freeware
F-Prot Anti-Virus for DOS (ver 3.16f) - Abandonware
Program A/V driver replacements (ver various) - Abandoned Freeware
Program code JMP mods (ver various) - Abandonware
Note: Faster processors require more radical approaches to slowing, but beware that some slowdowns can affect audio and system response.
Video bus speed and especially video cache reduction are two often overlooked, but very effective ways to slowdown for games.
Often you will have to run multiple utilities to achieve your goal, and probably need custom setups for each game.
System Speed Test (ver 6.00) - Abandonware
CPUSPEED (ver 2.1) - Freeware
Throttle (ver 14-Nov-2021) - Freeware
SetMul (ver 1.24) - Freeware
~ CWSDPMI (ver 7)
SMB (ver 2.09) - Freeware
~ CWSDPMI (ver 7)
NVClock (ver 0.8 beta 4) - Abandoned Freeware
~ CWSDPMI (ver 7)
CPUCACHE (ver 1.00) - Abandoned Freeware
~ includes: SLOWDOWN (ver 3.10) TSR
slowDOS (ver 1.03) - Freeware TSR
DMASLO (ver 12/10/88) - Abandoned Freeware TSR
AT-SLOW (ver 4.10) - Shareware made Abandoned Freeware TSR
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