| Name | Members |
 Art: drawings, stories, poems dedicated to BDSM | 17 |
| Bastinado: striking, cropping, whipping soles of the feet | 5 |
| Blood play: cuts, tracks, blood, etc. | 14 |
| Body modification: piercing, tattooing, branding, etc. | 14 |
| Bondage: securing with restraints, mobility restriction, tying a person | 62 |
| Breath play: erotic asphyxia, breath control | 13 |
| CBT: cock and ball torture | 6 |
| Chastity belts: male and female chastity belts | 3 |
| Corsets: all about corsets | 16 |
| D/s: relations, based on dominance and submission | 35 |
| Developers blog: all about the development of openbdsm.org | 10 |
| Electrical play: plays with life safety electricity | 5 |
| Femdom: female dominance only | 11 |
| Feminization: men to women transformations | 6 |
| Fetish: fetish clothing, attributes, accesories | 16 |
| Fire play: plays with fire or flame | 5 |
| Flagellation: all about whipping/flogging | 36 |
| Foot fetish: female legs, feet, fingers | 5 |
| Gags: all about gags | 12 |
| Giveaway: kinky stuff given away for free | 10 |
| Golden shower: urophilia, plays with urination | 4 |
| Handmade: handmade devices and clothes | 17 |
| High heels: women's shoes on high heels | 7 |
| Humour: all funny in BDSM | 27 |
| Knife play: plays with knifes | 10 |
| Latex: latex fetish | 9 |
| Leather: leather clothing and attributes fetish | 11 |
| Medical fetish: plays with medical attributes | 11 |
| Military fetish: military attributes fetish | 2 |
| Mummification: mobility restriction, immobilization, wrapping | 16 |
| Nylon: stockings, bodystockings, pantyhose | 9 |
| Outdoor: outdoor sessions and actions | 14 |
| Petplay: human animal roleplay | 4 |
| Play piercing: needles, punctures, etc. | 16 |
| S/M: sadism, masochism, sadomasochism | 31 |
| Scarification: all about scarification | 6 |
| Shibari: japanese rope art of erotic bondage | 52 |
| Society & BDSM: all about interaction of vanilla society and BDSM | 27 |
| Spanking: striking the buttocks | 12 |
| Steel bondage: handcuffs, chains, irons, etc. | 16 |
| Support: bugs, feedbacks, questions, ideas for openbdsm.org | 11 |
| Switch: switches in BDSM | 16 |
| Trampling: all about trampling | 2 |
| Vintage BDSM: BDSM in retro style | 20 |
| Waxing: candles, wax, paraffin | 32 |
| Zentai: zentai suits fetish | 4 |
