Invoxo

Sliptree is an easy-to-use invoicing tool built for freelancers and small businesses. Create, send, and manage invoices without the hassle of complex accounting software. Our clean, visual interface lets you design professional invoices and estimates in minutes — complete with your own logo, brand colors, and custom details. Turning estimates into invoices or issuing credit notes takes just a click, while built-in tax and VAT handling keeps your documents compliant and organized. Plus, manage all your customers, products, and services in one place. Supporting multiple languages and currencies, Sliptree also enables businesses working across borders to convert invoices into the PEPPOL e-invoice format, ensuring compliance with international standards for digital invoicing. Teams can collaborate seamlessly with flexible user roles and permissions. And with unlimited customers, products, and documents included in every paid plan — plus a 14-day free trial!

Clozo is an EU-first billing tool for freelancers: send a professional proposal with a legally-binding e-signature, collect a deposit, and get paid in one link via Stripe (card/iDEAL/Bancontact) or SEPA. It validates client EU VAT live (VIES), applies cross-border reverse-charge automatically, and generates compliant e-invoices in one click — ZUGFeRD, Factur-X, Peppol UBL, FacturaE, ebInterface, FatturaPA. Plus recurring billing, time tracking, expenses with DATEV export, and GDPR data export. Built for EU freelancers and micro-studios who want proposals, signatures, invoices, payments and expenses in one place instead of four separate tools.