# SlimPay alternatives — Payment As of 21 Oct 2026, the panel rates [Adyen (3/5)](https://whats-best.ai/software/payment/adyen), [Mollie (3/5)](https://whats-best.ai/software/payment/mollie) and [Checkout.com (3/5)](https://whats-best.ai/software/payment/checkout-com) highest among the other 30 Payment products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is [Adyen](https://whats-best.ai/software/payment/adyen) (EU-Made). Ratings are the AI panel’s opinion, formed from public evidence: [how scores are made](https://whats-best.ai/methodology#ordering). - Canonical page: https://whats-best.ai/software/payment/slimpay/alternatives - SlimPay: https://whats-best.ai/software/payment/slimpay.md - Data as of: 2026-10-21 **AI-generated.** Ratings and verdicts are the opinion of a panel of AI judges, formed from public evidence against a published rubric — an analysis, not a hands-on test. Listed by panel rating (products the panel could not rate follow alphabetically); no placement is for sale. How lists are ordered: https://whats-best.ai/methodology#ordering ## European alternatives to SlimPay - [Adyen](https://whats-best.ai/software/payment/adyen) · EU-Made · panel rating 3/5 · data hosting: not stated on the vendor’s pages Adyen's strongest bench scores land in checkout and strong customer authentication: judges cite an authentication engine that applies PSD2 exemptions itself, configurable Dynamic 3-D Secure rules, liability shift documented per exemption flow, and network tokenisation with an account updater. - [Mollie](https://whats-best.ai/software/payment/mollie) · EU-Made · panel rating 3/5 · data hosting: not stated on the vendor’s pages Mollie is a Dutch payments provider: Mollie B.V. - [Checkout.com](https://whats-best.ai/software/payment/checkout-com) · UK / wider Europe · panel rating 3/5 · data hosting: not stated on the vendor’s pages Checkout.com's strongest areas are payment methods, checkout and SCA, settlement and reconciliation, and licence and account terms, scoring 6 to 7. - [Novalnet](https://whats-best.ai/software/payment/novalnet) · EU-Made · panel rating 3/5 · data hosting: not stated on the vendor’s pages Novalnet AG is a BaFin-supervised payment institution under the German ZAG, register number 122702, in Garching near Munich. - [Pay.](https://whats-best.ai/software/payment/pay-nl) · EU-Made · panel rating 2.5/5 · data hosting: not stated on the vendor’s pages Pay. - [Paddle](https://whats-best.ai/software/payment/paddle) · UK / wider Europe · panel rating 2.5/5 · data hosting: not stated on the vendor’s pages Paddle is a merchant-of-record payment platform for digital products. - [MultiSafepay](https://whats-best.ai/software/payment/multisafepay) · EU-Made · panel rating 2.5/5 · data hosting: not stated on the vendor’s pages MultiSafepay B.V. - [PAYONE](https://whats-best.ai/software/payment/payone) · EU-Made · panel rating 2/5 · data hosting: not stated on the vendor’s pages PAYONE, a Frankfurt payment provider whose imprint names it a BaFin-licensed and supervised e-money institution, draws persona-weighted results from 4.0 to 4.8. - [Unzer](https://whats-best.ai/software/payment/unzer) · EU origin, foreign-owned · panel rating 2/5 · data hosting: not stated on the vendor’s pages Unzer is a Germany-based payment provider whose scores peak at licence and account terms, crediting the published BaFin payment-institution registration of Unzer E-Com GmbH (register number 122914), the Luxembourg and Danish licences, and an open account of the 2024 lifting of BaFin's special supervisory mandate. - [GoCardless](https://whats-best.ai/software/payment/gocardless) · UK / wider Europe · panel rating 2/5 · data hosting: not stated on the vendor’s pages GoCardless Ltd is a London bank-debit specialist whose captured pages document SEPA Direct Debit across the 36-country zone, euro-denominated only, plus Instant Bank Pay in GBP and EUR. - [Payplug](https://whats-best.ai/software/payment/payplug) · EU-Made · panel rating 1.5/5 · data hosting: not stated on the vendor’s pages Payplug is the payment product of PAYPLUG ENTERPRISE SAS, a French payment institution approved by the ACPR under CIB 16378 and part of BPCE Merchant Services. - [Nexi Checkout](https://whats-best.ai/software/payment/nexi-checkout) · EU-Made · panel rating 1.5/5 · data hosting: not stated on the vendor’s pages Nexi Checkout is an online-payment product from Nexi Germany GmbH, a BaFin-licensed e-money institution in Eschborn. - [wallee](https://whats-best.ai/software/payment/wallee) · UK / wider Europe · panel rating 1.5/5 · data hosting: not stated on the vendor’s pages wallee is a payment platform from Wallee Group AG, Winterthur, Switzerland. ## Other alternatives - [PayPal](https://whats-best.ai/software/payment/paypal) · Rest of world · panel rating 3/5 EU merchants contract with PayPal (Europe) S.à r.l. - [Stripe](https://whats-best.ai/software/payment/stripe) · Rest of world · panel rating 3/5 Stripe's strongest showing is the operational core: checkout and SCA at 7 to 8, recurring billing and settlement and reconciliation at 7, pricing transparency 6 to 8, payment methods 6. - [Ratepay](https://whats-best.ai/software/payment/ratepay) · provenance unknown · panel rating 2/5 Ratepay is a Berlin-based buy-now-pay-later provider offering invoice, SEPA direct debit, interest-free pay-in-3 instalments and prepayment through a hosted, white-label payment page. - [Saferpay](https://whats-best.ai/software/payment/saferpay) · provenance unknown · panel rating 2/5 Saferpay AG (Worldline) is a payment product whose public documentation is strongest at the checkout and thinnest on the money and contract around it. - [Paysafe](https://whats-best.ai/software/payment/paysafe) · provenance unknown · panel rating 2/5 Paysafe's holding entity is UK-based Paysafe Holdings UK Limited; it scores strongest on recurring billing, 5 to 6, and weakest on sovereignty, 1 to 3. - [Trust Payments](https://whats-best.ai/software/payment/trust-payments) · provenance unknown · panel rating 1.5/5 Trust Payments is a payments group judged here on its captured public pages. - [Paytrail](https://whats-best.ai/software/payment/paytrail) · provenance unknown · panel rating 1.5/5 Paytrail Oyj, a Finnish payment provider claiming to be the largest Finnish online payment company, scores highest where its Finnish-market detail is written down: payment methods, recurring billing and settlement and reconciliation each carry a minimum of 4 and maximum of 4, on the strength of nine named Finnish online banks, MobilePay and Siirto, provider-stored card tokens with scheduled charges and seven-day authorization holds, and daily payouts reconciled by order reference and payment stamp. - [SumUp](https://whats-best.ai/software/payment/sumup) · provenance unknown · panel rating 1.5/5 SumUp's captured pages describe a card-first payments provider for in-person and online acceptance. - [Ecommpay](https://whats-best.ai/software/payment/ecommpay) · provenance unknown · panel rating 1.5/5 Ecommpay is a payment provider whose evidence is strongest where subscriptions live and thinnest where regulated checkout and finance demand detail. - [Trustly](https://whats-best.ai/software/payment/trustly) · provenance unknown · panel rating 1.5/5 Trustly's captured pages describe a single-rail payment product — direct bank transfer marketed across 33+ markets — with the only named country list, the United Kingdom, Guernsey, Jersey and Gibraltar, attached to a BACS Direct Debit recurring flow built for North American merchants. - [Przelewy24](https://whats-best.ai/software/payment/przelewy24) · provenance unknown · panel rating 1.5/5 Przelewy24, a payment service from PayPro S.A., scores best on checkout and strong customer authentication, 3-4: 3-D Secure 2.x meeting PSD2 requirements is stated, with four integration options and a demo store. - [Paysera](https://whats-best.ai/software/payment/paysera) · provenance unknown · panel rating 1/5 Paysera LT, UAB earns its strongest scores on payment methods, where scores cluster at 4: the catalogue names each method with its payer countries — cards, Apple Pay and Google Pay worldwide, Baltic and Bulgarian bank links, Revolut across the EEA and GB, and Wise in 77 countries — though no public information appears on SEPA Direct Debit or any DACH or Benelux method. - [Scalapay](https://whats-best.ai/software/payment/scalapay) · provenance unknown · panel rating 0.5/5 Scalapay S.p.A. - [Tpay](https://whats-best.ai/software/payment/tpay) · provenance unknown · panel rating 0.5/5 Tpay is a payment service from Krajowy Integrator Płatności S.A., seated in Poznań, which contracts with merchants and is named as data controller; card acceptance for Apple Pay runs through the acquirer Elavon. - [Worldline Online Payments](https://whats-best.ai/software/payment/worldline-online-payments) · provenance unknown · panel rating 0/5 Worldline Online Payments, a payment offering from Worldline SA, publishes product-level marketing — an "all-in-one online payment solution", acquiring processing for all channels, omnichannel and cross-border payments — plus scale figures of 1.2M+ merchants and financial institutions and 48bn transactions processed. - [Alma](https://whats-best.ai/software/payment/alma) · provenance unknown · panel rating not rated (too little public evidence) Alma SAS is listed in the payment category, but the only captured page describes the company, not its product. - [Klarna](https://whats-best.ai/software/payment/klarna) · provenance unknown · panel rating not rated (too little public evidence) Klarna Bank AB reaches this bench as a payment product whose captured documentation is addressed to payment providers (e.g. Ratings are out of 5 (the panel's mean, half steps). --- Cite as: whats-best.ai, "SlimPay alternatives — Payment", AI panel analysis, as of 2026-10-21. https://whats-best.ai/software/payment/slimpay/alternatives