| Version | Release date | Platform | Link | Size | CRC32 |
| Experimental versions (not recommended for general use): | |||||
| 4.600ex | 2006.07.03 | Linux/x86 console (Lossless only) | OptimFROG_Lossless_Linux_x86_4600ex.zip | 321227 | A1C002A9 |
| 4.600ex | 2006.07.03 | Linux/amd64 console (Lossless only) | OptimFROG_Lossless_Linux_amd64_4600ex.zip | 459699 | B59E0411 |
| 4.600ex | 2006.07.03 | Darwin/ppc console (Lossless only) | OptimFROG_Lossless_Darwin_ppc_4600ex.tar.gz | 116708 | 8DBA1782 |
| 4.600ex | 2006.06.26 | Win32/x86 console (Lossless only) | OptimFROG_Lossless_Windows_x86_4600ex.zip | 236481 | 42BAAC96 |
| Latest beta versions (recommended): | |||||
| 1.21b | 2006.06.26 | foobar2000 v0.9.1 plug-in with cue sheet support (source code included) | foo_input_ofr_121b.zip | 207894 | 8589C145 |
| 4.520b1 | 2006.04.26 | Win32/x86 console (Lossless, DualStream, and IEEE Float) | OptimFROG_All_Windows_x86_4520b1.zip | 520399 | C744FB1B |
| 4.520b1 | 2006.04.26 | Linux/x86 console (Lossless, DualStream, and IEEE Float) | OptimFROG_All_Linux_x86_4520b1.zip | 1171509 | DFFF486F |
| 4.520b1 | 2006.04.26 | Linux/amd64 console (Lossless, DualStream, and IEEE Float) | OptimFROG_All_Linux_amd64_4520b1.zip | 1643407 | A290E1F6 |
| 4.520b1 | 2006.04.26 | Darwin/ppc console (Lossless, DualStream, and IEEE Float) | OptimFROG_All_Darwin_ppc_4520b1.tar.gz | 368898 | 21C5E65E |
| 1.210b | 2006.03.04 | Win32/x86 + Linux/x86 + Linux/amd64 SDK DLL/SO library, header files, and samples + plug-ins binaries and source code [foobar2000, Winamp 5, dBpowerAMP, XMMS] |
OptimFROG_SDK_All_1210b.zip | 617551 | 8ADB1941 |
| Old pre-release versions: | |||||
| pr1.200_2 | 2005.09.21 | Win32 + Linux SDK DLL/SO library, header files, and samples + plug-ins binaries and source code [foobar2000, Winamp 5, dBpowerAMP, XMMS] |
OptimFROG_SDK_All_pr1200_2.zip | 461840 | B7CEF00D |
| pr4.510 | 2005.07.17 | Win32 console (Lossless, DualStream, and IEEE Float) | OptimFROG_All_Windows_pr4510.zip | 355974 | 1A93B950 |
| pr4.510 | 2005.07.17 | Linux console (Lossless, DualStream, and IEEE Float) | OptimFROG_All_Linux_pr4510.zip | 857565 | 1F77A0AD |
| Old stable versions: | |||||
| QCD | 2004.04.23 | QCD input plug-in | External Download Page | - | - |
| RadLight | 2004.04.27 | DirectShow Decoder RadLight, WMP, and others |
External Download Page | - | - |
| 4.509 | 2004.05.14 | Linux console IEEE Float compression only |
OptimFROG_IEEE_Float_Linux_4509.zip | 269163 | DB5F707C |
| 4.509 | 2004.05.14 | Linux console (Lossless) | OptimFROG_Linux_4509.zip | 263167 | D48CAFE7 |
| 4.509 | 2004.05.14 | Linux console (DualStream) | OptimFROG_DualStream_Linux_4509.zip | 285024 | 491BDE88 |
| 1.100 | 2004.04.21 | Win32 SDK DLL library and header file sample command line decoder source simple sample command line decoder source foobar2000 decoder plug-in source |
OptimFROG_SDK_Win32_1100.zip | 148366 | EE93C134 |
| 1.09 | 2004.04.21 | foobar2000 v0.8.1 plug-in | foo_ofr_109.zip | 80709 | F9A9407A |
| 4.509 | 2004.04.18 | Win32 console IEEE Float compression only |
OptimFROG_IEEE_Float_Win32_4509.zip | 110926 | 628427BA |
| 4.509 | 2004.04.13 | Win32 console (Lossless) | OptimFROG_Win32_4509.zip | 105916 | 9163D9C9 |
| 4.509 | 2004.04.13 | Win32 console (DualStream) | OptimFROG_DualStream_Win32_4509.zip | 124146 | FCFE9AA5 |
| 1.07 | 2003.09.28 | foobar2000 v0.7 plug-in PiMP | OptimFROG_foobar2000_107.exe | 126425 | FBB51E4E |
| 1.07 | 2003.09.28 | dBpowerAMP plug-in PiMP | OptimFROG_dBpowerAMP_107.exe | 120965 | D2F39BAB |
| 1.07 | 2003.09.28 | Winamp3 plug-in PiMP | OptimFROG_Winamp3_107.exe | 120991 | EFB5E84C |
| 1.07 | 2003.09.28 | Winamp2 plug-in PiMP | OptimFROG_Winamp2_107.exe | 120720 | C281FD15 |
| 1.07 | 2003.09.28 | XMPlay plug-in PiMP | OptimFROG_XMPlay_107.exe | 120994 | 9D8D5781 |
| 1.07 | 2003.09.28 | XMMS plug-in, RedHat 8.0 | OptimFROG_XMMS_RH80_107.zip | 65541 | 65389F80 |
| 1.07 | 2003.09.28 | XMMS plug-in, Debian 3.0 | OptimFROG_XMMS_DB30_107.zip | 65541 | C84B0CB1 |
| The complete list of previous versions which are available on e-mail request. | |||||