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Free and open source.

Premium plugins when you need them.

Lettern

Free

  • MIT licence, every site
  • The assistant and MCP included
  • No keys, seats or banners
Get startedSee it on GitHub

Commerce

€199

per site
  • Checkout, invoices, VAT and refunds
  • Test mode on any host, for free
  • €119 to extend updates
See CommerceAll plugins

Questions

Can I use it for client work?
Yes. Any use, on any number of sites. There’s no key to enter and no banner to remove.
Does the assistant cost extra?
No. It runs on your own API key, so you pay your AI provider directly for what you use.
What does a plugin licence cover?
One site, with updates for the period shown when you buy. An extension adds another period.
What if a plugin licence runs out?
Your site keeps running and keeps selling. The most it does is show a banner in the admin.
Do prices include VAT?
Prices exclude VAT. You see the total for your country before you pay.
Can I get a refund?
Yes, within 30 days of buying a plugin licence.