On Kinkomatic you can create an online BDSM checklist and share it with your partner via a link.
Here are some examples of checklists created with Kinkomatic:

• www.kinkomatic.com/checklist/Theresa_Berkley's checklist
• www.kinkomatic.com/checklist/Marquis_de_Sade's checklist
• www.kinkomatic.com/checklist/Sacher-Masoch's checklist