OSM tools that I have made:

• Phone report
  • Reports on and suggests fixes for invalid or incorrectly formatted phone numbers
  • Is linked to an ongoing bot edit
• Opening hours report
  • Reports on and suggests fixes for invalid and opening hours tags
• Incomplete names report
  • Reports on incomplete multilingual names
• DfE to OSM
  • Compares official data with OSM data for schools and educational establishments in England and Wales

I run the confusedbuffalo-bot account.