Banco Inter (Brazil) Pix + boleto for nopCommerce: immediate & due-date Pix with refunds (devolução), boleto issue/PDF/cancel, and registered webhooks — over OAuth2 + mTLS.
Full Braspag (Cielo Pagador) gateway: direct credit-card capture with 3D Secure 2.0, Cartão Protegido tokenization, installments, Pix, boleto, capture/void, full & partial refunds, and a fail-closed webhook.
Full Cielo eCommerce API 3.0 gateway: direct card capture with 3D Secure 2.x, Cartão Protegido tokenization, installments, Pix, boleto, capture/void, full & partial refunds, and a fail-closed webhook.
Accept Pix (with QR + copia-e-cola), boleto, and credit card through Efí (Efí Bank / ex-Gerencianet) — OAuth2 with the required mTLS certificate, fail-closed webhook confirmation, and Pix refunds.
Full GetNet (Santander) gateway for nopCommerce: credit & debit cards with 3D Secure, Pix, boleto, installments, capture/void, full & partial refunds, and fail-closed HMAC-signed webhooks.
IOGU (iugu) gateway for nopCommerce: transparent credit-card checkout with tokenization and installments, full & partial refunds, plus hosted Pix and boleto, with CPF/CNPJ collection and verified webhooks.