Helios - Invoicing for freelancers. Fast, clean, multilingual.

Stop wrestling with spreadsheets. Helios is a modern invoicing tool built for independent workers — available in 7 languages (EN, FR, ES, DE, PT, IT, NL). Create invoices, send quotes, automate payment reminders, accept Stripe payments, and give clients their own portal. Includes FEC export, recurring invoices, REST API, dark mode, and a free plan. No credit card required.