Invoice Ninja

Invoice Ninja is an open source invoicing and payment platform. The free plan supports unlimited invoices and up to 5 active clients, making it a solid choice for freelancers just starting out.

What You Get on the Free Plan

• Unlimited invoices - Create and send as many invoices as you need
• 5 active clients - Manage up to 5 clients
• Payment processing - Accept credit cards and bank transfers
• Expense tracking - Log and categorize business expenses
• Time tracking - Track billable hours and convert to invoices
• Proposals - Create and send proposals to potential clients
• Client portal - Let clients view and pay invoices online

What to Know

The 5 active client limit is the main restriction. The Pro plan ($10/month) removes this limit and adds custom branding. Invoice Ninja is also open source and can be self-hosted for free with no client limits.