| Onebitman | Walking in the Air | MUSICIANS/O/Onebitman/Walking_in_the_Air.sid | [...] |
| OneByteMuzik | Immensity (preview) | GAMES/G-L/Immensity_preview.sid | [...] |
| OneByteMuzik & Hermit | Immensity (preview 2) | GAMES/G-L/Immensity_preview_2.sid | [...] |
| Onosendai | Cosmos | MUSICIANS/O/Onosendai/Cosmos.sid | [...] |
| Onosendai | Rising Sun | MUSICIANS/O/Onosendai/Rising_Sun.sid | [...] |
| Onosendai | Travel | MUSICIANS/O/Onosendai/Travel.sid | [...] |
| Onosendai | Visitors (Koto Cover) | MUSICIANS/O/Onosendai/Visitors_Koto_Cover.sid | [...] |
| Onyx Design | Halifax | GAMES/G-L/Halifax.sid | [...] |
| Optimus Prime | I Heard a Rumour | DEMOS/G-L/I_Heard_a_Rumour.sid | [...] |
| Opus & Natas | Sweden Demo II (part 2) | DEMOS/S-Z/Sweden_Demo_II_part_2.sid | [...] |
| Orreborre | City Night | DEMOS/A-F/City_Night.sid | [...] |
| Oscar Giesen (OPM) | Fantjes Beat | MUSICIANS/O/OPM/Fantjes_Beat.sid | [...] |
| Oscar Giesen (OPM) | Rockmonitor 3 | MUSICIANS/O/OPM/Rockmonitor_3.sid | [...] |
| Oscar Giesen (OPM) | Rockmonitor 5 Demosong | MUSICIANS/O/OPM/Rockmonitor_5_Demosong.sid | [...] |
| Oscar Giesen (OPM) | Sid Slam | MUSICIANS/O/OPM/Sid_Slam.sid | [...] |
| Oscar Giesen (OPM) | Zoolook | MUSICIANS/O/OPM/Zoolook.sid | [...] |
| Oskar Törnros | Arabian Night Out | MUSICIANS/T/Toernros_Oskar/Arabian_Night_Out.sid | [...] |
| Oskar Törnros | House of Pokey | MUSICIANS/T/Toernros_Oskar/House_of_Pokey.sid | [...] |
| Oskar Törnros | Infinite Groove | MUSICIANS/T/Toernros_Oskar/Infinite_Groove.sid | [...] |
| Oskar Törnros | Infinite Infödings | MUSICIANS/T/Toernros_Oskar/Infinite_Infoedings.sid | [...] |
| Oskar Törnros | Jingle Bells | MUSICIANS/T/Toernros_Oskar/Jingle_Bells.sid | [...] |
| Oskar Törnros | Kexfabriken | MUSICIANS/T/Toernros_Oskar/Kexfabriken.sid | [...] |
| Oskar Törnros | Non-Stop Partying! | MUSICIANS/T/Toernros_Oskar/Non-Stop_Partying.sid | [...] |
| Oskar Törnros | Ondska in the Doomed Land | MUSICIANS/T/Toernros_Oskar/Ondska_in_the_Doomed_Land.sid | [...] |
| Oskar Törnros | Peacemakers Success | MUSICIANS/T/Toernros_Oskar/Peacemakers_Success.sid | [...] |
| Oskar Törnros | Psycho | MUSICIANS/T/Toernros_Oskar/Psycho.sid | [...] |
| Oskar Törnros | Racing in the Kulvert | MUSICIANS/T/Toernros_Oskar/Racing_in_the_Kulvert.sid | [...] |
| Oskar Törnros | Sarias Song | MUSICIANS/T/Toernros_Oskar/Sarias_Song.sid | [...] |
| Oskar Törnros | The Duck | MUSICIANS/T/Toernros_Oskar/Duck.sid | [...] |
| Oskar Törnros | Time for Action | MUSICIANS/T/Toernros_Oskar/Time_for_Action.sid | [...] |
| Ossi Aarnio (Ozzy Oldskool) | Bulliting | MUSICIANS/O/Ozzy_Oldskool/Bulliting.sid | [...] |
| Ossi Aarnio (Ozzy Oldskool) | No Direction | MUSICIANS/O/Ozzy_Oldskool/No_Direction.sid | [...] |
| Ossi Aarnio (Ozzy Oldskool) | Risperdal Dreams (part 4) | MUSICIANS/O/Ozzy_Oldskool/Risperdal_Dreams_part_4.sid | [...] |
| Ossi Aarnio (Ozzy Oldskool) | Starglide | MUSICIANS/O/Ozzy_Oldskool/Starglide.sid | [...] |
| Otto | Shoebox | DEMOS/S-Z/Shoebox.sid | [...] |
| Otto Järvinen (SounDemoN) | 1K Tune | MUSICIANS/S/SounDemoN/1K_Tune.sid | [...] |
| Otto Järvinen (SounDemoN) | Altparty Invitation | MUSICIANS/S/SounDemoN/Altparty_Invitation.sid | [...] |
| Otto Järvinen (SounDemoN) | Amulet of Yendor | MUSICIANS/S/SounDemoN/Amulet_of_Yendor.sid | [...] |
| Otto Järvinen (SounDemoN) | Ancient Song | MUSICIANS/S/SounDemoN/Ancient_Song.sid | [...] |
| Otto Järvinen (SounDemoN) | Arkanoid | MUSICIANS/S/SounDemoN/Arkanoid.sid | [...] |
| Otto Järvinen (SounDemoN) | Arpeggioland | MUSICIANS/S/SounDemoN/Arpeggioland.sid | [...] |
| Otto Järvinen (SounDemoN) | Bachimisation | MUSICIANS/S/SounDemoN/Bachimisation.sid | [...] |
| Otto Järvinen (SounDemoN) | Beertime 3 | MUSICIANS/S/SounDemoN/Beertime_3.sid | [...] |
| Otto Järvinen (SounDemoN) | Black (short) | MUSICIANS/S/SounDemoN/Black_short.sid | [...] |
| Otto Järvinen (SounDemoN) | Bojojoing | MUSICIANS/S/SounDemoN/Bojojoing.sid | [...] |
| Otto Järvinen (SounDemoN) | Bright | MUSICIANS/S/SounDemoN/Bright.sid | [...] |
| Otto Järvinen (SounDemoN) | Bright Yellow, Distinct & Loud | MUSICIANS/S/SounDemoN/Bright_Yellow_Distinct_and_Loud.sid | [...] |
| Otto Järvinen (SounDemoN) | Brown | MUSICIANS/S/SounDemoN/Brown.sid | [...] |
| Otto Järvinen (SounDemoN) | Cars | MUSICIANS/S/SounDemoN/Cars.sid | [...] |
| Otto Järvinen (SounDemoN) | Cheap Magic | MUSICIANS/S/SounDemoN/Cheap_Magic.sid | [...] |