"BonPatron Pro"

Create a new account and try the Pro version for up to 5 days without paying anything!


BonPatron is an online tool for writing in French that identifies spelling errors and common grammatical problems. BonPatron Pro offers several advantages over the free version:

  • no advertising (ads help support the free version)
  • a verb conjugator
  • resizable editor – much more room available for editing your text
  • fullscreen editor – you can maximize the editor to the size of your browser window (except in Safari)
  • text archiving – you can view any of your previously submitted texts
  • summary of errors
  • interactive grammar exercises for many errors
  • integrated English-French dictionary
  • a mechanism for easily inserting accented characters
  • several more planned features....
  • finally, a subscription helps support this project (think of it as a donation if you prefer)


Individuals can purchase a one year license for BonPatron Pro for only €1299 (about $16, other currencies are accepted). To purchase an individual license, visit the Create an Account Page. Create an account now and also receive a bonus subscription to SpellCheckPlus Pro (our editor for texts in English).

Group, academic, and institutional licenses are also available with volume discounts. Schools can purchase licenses for each machine in their computer labs (shared licenses) or purchase licenses for each student (which allow students to use the license at home as well). Please contact us for more information.