List of On/Off Ramp projects on Starknet (2026)

Onramper Onramp is a fiat-to-crypto aggregation product that connects business integrations to dozens of underlying onramp providers through a single API. The product routes end users to the optimal provider based on country, payment method, KYC requirements, and provider success rates, surfacing the best available conversion rate and fees. Businesses integrate once and gain global coverage across credit cards, bank transfers, and local payment methods.

Onramper Offramp is a crypto-to-fiat aggregation product that connects business integrations to multiple offramp providers through a single API. The product supports payouts to bank accounts, debit cards, and PayPal across multiple fiat currencies and jurisdictions, routing each withdrawal to the optimal provider based on cost, settlement speed, and recipient country. Businesses offer end users a unified withdrawal experience without integrating each offramp.

Onramper Headless Ramps is an SDK for embedding fiat-to-crypto onramp functionality directly into applications, rendering all purchase screens within the host app's own UI without iFrames or external redirects. The SDK accepts a fiat amount, crypto asset, and wallet address, then routes each transaction to the optimal provider. It supports native Apple Pay and other express payment methods, with automatic retry logic to handle provider failures.

Kraken Ramp is a fiat-to-crypto on/off-ramp API that enables third-party platforms to embed compliant buy and sell flows through a single integration. The API supports various digital assets across multiple blockchains with several payment methods including ACH, SEPA, PIX, Apple Pay, and Google Pay across multiple markets.

Instant Buy enables immediate cryptocurrency purchases at fixed quoted prices using various payment methods including credit cards, debit cards, and e-wallets.

Topper is a fiat-to-crypto on-ramp and crypto-to-fiat off-ramp delivered through an embeddable widget and developer APIs for business partners and wallets. Consumers buy crypto directly to a self-custodial wallet using cards, digital wallets, or bank transfers, and sell crypto to receive fiat on a linked debit card. The product supports recurring purchases and integrates via a web SDK, mobile SDK, REST API, webhooks, and single sign-on for partner applications.

Guardarian On/Off Ramp is a fiat-to-crypto and crypto-to-fiat exchange that lets users buy, sell, and swap cryptocurrencies using bank transfers, cards, and digital wallets across multiple fiat currencies. The service also supports transactions in tokens backed by real-world assets such as treasuries and real estate. Users select a currency pair, submit a wallet address, and receive funds through a compliance-integrated conversion process. It serves individual users seeking straightforward crypto access without requiring an account for basic exchanges.

G-OnePay provides users with a single permanent cryptocurrency deposit address that automatically converts incoming crypto to fiat and settles the proceeds to a linked bank account. Users complete verification once, connect their bank details, and reuse the same address indefinitely instead of generating new addresses for each transfer. It is designed for individuals and businesses handling recurring or high-volume settlements.

Sphere Embedded Ramp is a hosted widget enabling end users to buy or sell stablecoins using fiat payment rails within third-party applications. The widget handles KYC and KYB workflows, payment processing, and regulatory compliance while allowing the host platform to apply custom theming. It provides transfer history and real-time status updates for end users converting between fiat currencies and stablecoins across multiple blockchains.

SpherePay Dashboard is a self-serve web application enabling businesses to manage global stablecoin payments without code. The dashboard provides interfaces for sending, receiving, converting, and ramping between fiat and stablecoins, with integrated compliance workflows, transaction tracking, and settlement management, accessed through a single business account. It is used by businesses seeking full on- and off-ramping functionality alongside broader payments support in a no-code interface.

Banxa Checkout is an on/off-ramp product that lets users convert between fiat currencies and cryptocurrencies through a hosted checkout interface. It processes buy and sell orders with integrated payment methods, wallet handling, and KYC/AML compliance checks. Businesses embed the checkout via iframe, redirect, or SDK to offer fiat-to-crypto and crypto-to-fiat conversion to their own users across multiple blockchain networks.

Ramp Network is a payment infrastructure that enables buying cryptocurrencies with fiat currency, selling cryptocurrencies back to fiat, and swapping between digital assets across multiple blockchains. It operates through a single embeddable widget that businesses integrate into their applications, and a consumer application that individuals use directly. The platform also provides a self-custodial wallet built into its mobile application, allowing users to store and manage supported digital assets without giving up control of their private keys.

Unlimit Fiat On/Off-Ramp is a service that converts fiat currency to cryptocurrency and back for businesses and their customers. It processes transactions through a single API, a customizable widget, or a white-label integration, drawing on a large portfolio of payment methods including e-wallets, instant bank transfers, QR codes, and cards. The service applies modular KYC checks and handles fraud and anti-money-laundering screening directly, supporting multiple digital assets and blockchain networks.

Onramp Money is a fiat-to-crypto payment infrastructure that lets individuals and businesses convert between local currencies and cryptocurrencies. It processes fiat purchases and sales of digital assets through local payment methods, and also lets users swap between supported tokens across multiple blockchains, spend crypto through gift cards at a range of merchants, and move value through stablecoin-based payouts. The service is accessible through a website widget, mobile applications, and an API or SDK that other wallets and exchanges embed for their own users. Identity verification and compliance checks are built into the transaction flow across the countries it serves.

ChainRails is a merchant payment gateway that lets businesses accept cryptocurrency and fiat payments from any supported blockchain, token, or currency through a single integration. It processes transactions with an intent-based architecture that escrows funds on-chain, automatically routes and swaps or bridges them, and settles to the recipient's preferred chain, token, or bank account. Businesses integrate through an embeddable payment modal, direct API and SDK calls, or contract-level integration, and can generate shareable payment links, manage deposits and withdrawals, and sponsor network fees for end users through a paymaster feature. A dashboard provides visibility into volume, revenue, and API configuration. Fiat conversion and identity verification are handled through integrated ramp and KYC flows.

A platform that enables users to buy and sell cryptocurrencies using local fiat currencies in Latin America. The service processes transactions between bank accounts and crypto wallets with minimal friction.

An API solution for businesses to integrate cryptocurrency on/off ramp capabilities into their applications, allowing their users to convert between fiat and crypto assets seamlessly with local currency support in Latin America.