AdyenPayments & FintechAdyen is an Amsterdam-founded payments platform for enterprises, covering online and in-person acceptance, payouts and card issuing.CommercialSoftwarePaidViews · 7 daysTop 10%
Payments & Fintech
Payment gateways, merchant platforms, business accounts and cross-border transfer services.
21 results in Payments & Fintech
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AdyenPayments & FintechAdyen is an Amsterdam-founded payments platform for enterprises, covering online and in-person acceptance, payouts and card issuing.CommercialSoftwarePaid28 views
AirwallexPayments & FintechAirwallex offers business multi-currency accounts, international transfers, corporate cards, payment acceptance and invoicing, plus platform APIs.CommercialSoftwarePaidViews · 7 daysTop 29%
Checkout.comPayments & FintechCheckout.com provides payment APIs and hosted components for building merchant checkout flows.CommercialSoftwareContact salesViews · 7 daysTop 29%
FlexpriceAccounting & InvoicingFlexprice meters usage events in real time and turns them into invoices for usage-based, credit-based and hybrid pricing, with entitlements, wallets, SDKs and Stripe and other integrations. Go backend, AGPLv3 open core, Flexprice Cloud or self-hosted.Open sourceSelf-hostedFreemiumViews · 7 daysTop 29%
GumroadPayments & FintechGumroad lets creators sell digital products, memberships and courses with built-in checkout, affiliates, payouts and a v2 API. The web application source is MIT licensed; selling runs on gumroad.com, not on a documented self-host path.Open sourceWeb platformPaidViews · 7 daysTop 29%
HyperswitchPayments & FintechApache-2.0 payments platform from Juspay that puts one API in front of Stripe, Adyen and other processors, with routing, smart retries, a card vault and a Control Center. Self-host with Docker or Helm, or use Hyperswitch Cloud.Open sourceSelf-hostedFreemiumViews · 7 daysTop 16%
MagicPayments & FintechMagic provides an API for embedding non-custodial wallets in apps, with email, social, passkey and SSO login, so users do not manage seed phrases.CommercialSelf-hostedFreemiumViews · 7 daysTop 29%
Maybe FinanceAccounting & InvoicingSelf-hosted Ruby on Rails app for tracking net worth, accounts, budgets, investments and transactions, with CSV imports, rules, an API and optional AI chat. AGPLv3; archived at the final v0.6.0 release in July 2025.Open sourceSelf-hostedViews · 7 daysNo views in 7 days
MercuryPayments & FintechMercury is a fintech company offering business checking and savings, cards and payments with an API; banking is provided by partner banks.CommercialWeb platformFreeViews · 7 daysTop 29%
MeteroidAccounting & InvoicingMeteroid meters usage events and bills them with versioned plans, subscriptions, quotes, credits, invoices and e-invoicing. Rust backend on PostgreSQL, ClickHouse and Kafka, AGPL-3.0 open-source edition, Enterprise images and an EU-hosted cloud.Open sourceSelf-hostedFreemiumViews · 7 daysNo views in 7 days
MolliePayments & FintechMollie provides a payments API for European businesses covering cards, iDEAL and other local payment methods online, plus in-person card terminals and subscription billing, with pay-as-you-go pricing.CommercialSoftwarePaidViews · 7 daysTop 29%
monetrAccounting & Invoicingmonetr is a budgeting app that plans around recurring expenses and paychecks, shows a Free-To-Use balance and forecasts, imports OFX or syncs via Plaid. Hosted at $4 a month or self-hosted with Docker Compose.CommercialSelf-hostedFreemiumViews · 7 daysTop 2%
PayoneerPayments & FintechPayoneer gives businesses receiving accounts in 70+ currencies, payment requests and links, mass payouts, cards and APIs for cross-border payments.CommercialSoftwareFreemiumViews · 7 daysTop 29%
PayPalPayments & FintechPayPal offers checkout and payment-link options for merchants, with integration choices for different sales flows.CommercialSoftwarePaidViews · 7 daysTop 29%
PlaidPayments & FintechPlaid provides APIs that let applications securely connect to users' bank accounts for identity verification, transaction history, balance checks and payment initiation.CommercialSoftwarePaidViews · 7 daysTop 29%
RazorpayPayments & FintechRazorpay is a Bangalore-based payment company offering a payment gateway for UPI, cards and netbanking, plus POS and API payouts.CommercialWeb platformPaidViews · 7 daysTop 29%
SquarePayments & FintechSquare (Block) provides point-of-sale hardware/software, payment processing, invoicing, payroll and banking tools for small and midsize merchants, free to start with per-transaction fees.CommercialSoftwareFreemiumViews · 7 daysTop 29%
StripePayments & FintechStripe offers APIs and hosted components for payments; Billing and Radar add subscription and risk workflows with their own scopes.CommercialWeb platformPaidViews · 7 daysTop 29%
SureAccounting & InvoicingSure is a community-maintained AGPLv3 fork of Maybe Finance: a Ruby on Rails app for accounts, budgets, bills, loans and investments, self-hosted with Docker or Helm, with optional bank sync, AI chat, an API and an MCP endpoint.Open sourceSelf-hostedViews · 7 daysTop 3%
WisePayments & FintechWise offers international transfers at the mid-market rate with an upfront fee, multi-currency accounts, a debit card, business payments and the Wise Platform API. Rules, fees and currencies vary by country.CommercialWeb platformPaidViews · 7 daysTop 16%
YAFFAAccounting & InvoicingYAFFA is a free, MIT-licensed personal finance web app you host yourself. It records transactions, schedules recurring items, plans budgets, tracks investments and imports CSV and QIF, with optional AI receipt processing.Open sourceSelf-hostedViews · 7 daysNo views in 7 days
Shortlists for Payments & Fintech
Explore collections with tools relevant to this category, grouped by deployment, source model or workload.
IT tools with an API →
21 matching tools from this category
Self-hosted IT tools →
8 matching tools from this category
Open-source IT tools →
7 matching tools from this category
How to choose payments & fintech tools
Payments and fintech services let businesses accept card and local payment methods, hold balances in several currencies, pay suppliers and contractors abroad, and connect bank accounts to software through APIs. Developers work with their SDKs and hosted checkout components, while finance teams use dashboards for payouts and reconciliation. Accounting tools record transactions after the fact, whereas these providers actually move money and carry the regulatory obligations that come with it.
Who uses these tools
- Developers integrating checkout into web and mobile apps
- Finance teams paying international suppliers and contractors
- Founders choosing a payment stack for launch
Capabilities to compare
- Supported payment methods and settlement currencies
- Hosted checkout versus API-level integration
- Subscriptions, invoicing and payment links
- Multi-currency accounts and payouts
- Fraud screening, disputes and webhooks
Operating considerations
- Transaction fees and currency conversion margins
- PCI DSS scope of your integration
- Account reviews and frozen balances
- Supported countries for merchants and payees
- Data migration when changing processors
Selection checklist
- List the countries and payment methods your customers use and confirm the provider supports them for your entity.
- Model fees on real transaction volumes, including currency conversion, refunds, chargebacks and payouts.
- Prefer hosted fields or checkout pages to keep card data, and most PCI DSS obligations, off your servers.
- Ask how stored payment tokens can be exported if you move to another processor later.
What belongs in this category: Products appear here when they process payments, issue accounts or cards, move funds across borders or provide banking data APIs, rather than only invoicing customers or keeping the books.
Payments & Fintech on iThub in figures
iThub lists 21 tools in Payments & Fintech. 7 of 21 are open source, 8 of 21 can be self-hosted, 11 of 21 have a free, freemium or open-source pricing model and 21 of 21 offer an API.
- Tools listed
- 21
- Open source
- 7
- Self-hostable
- 8
- Free to start
- 11
- With an API
- 21
- Web app
- 12
- Desktop app
- 1
Typical use cases
- Accepting cards and local methods in an online store
- Running recurring subscription billing for a SaaS product
- Paying freelancers in several countries from one balance
- Connecting customer bank accounts for verification in an app
Trade-offs to model
- All-in-one platforms bundle checkout, billing and payouts, while specialised providers often offer better rates in specific regions or methods.
- Hosted checkout pages cut compliance work, whereas fully custom integrations allow branded flows but widen your security scope.
Common mistakes
- Ignoring webhook handling and idempotency, which leads to duplicate orders or missed payment confirmations.
- Relying on a single processor with no fallback, so one account review stops all incoming revenue.
Compare Stripe and PayPal →Browse accounting and invoicing tools →See tools with an API →
Decision resources
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Comparisons
Stripe vs PayPal →0 tools selectedCompare selected