Invoice Ninja

Open-source invoicing tool, free with unlimited invoices when self-hosted.

Open Source WebiOSAndroid ★ 4 editorial
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Visit Invoice Ninja → invoiceninja.com/

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Invoice Ninja logo — Open-source invoicing tool, free with unlimited invoices when self-hosted.

Quick Summary

Invoice Ninja is invoicing and basic billing software available both as a hosted SaaS product and as a self-hosted open-source application, which makes it a particularly common choice for freelancers, developers, and small agencies who want to avoid recurring per-invoice or per-client SaaS fees entirely by running it on their own server. Its open-source codebase also means no vendor lock-in — the software keeps working even if the company behind it changed direction or shut down, a real consideration for invoicing tools handling ongoing client billing relationships.

Pricing: Open Source / Free Platforms: Web, iOS, Android Editorial rating: 4 / 5 Category: Invoicing Tools

Invoice Ninja at a Glance

Category Invoicing Tools
Pricing model Open Source / Free
Starting price $0 (free plan available)
Platforms Web, iOS, Android
Editorial rating ★ 4 / 5 (Kreemhunt staff score)
Best for Open-source invoicing tool, free with unlimited invoices when self-hosted.
Community votes 14

Pros

  • Free if self-hosted, with no client or invoice limits, since there's no per-usage SaaS pricing model at all in that configuration
  • Open-source codebase means no vendor lock-in — the software keeps functioning even if the company changes direction or the hosted service is discontinued
  • Recurring invoices and basic billing automation are included even at the lower-priced hosted tier
  • Full source code transparency appeals to developers and technically-minded freelancers who want to understand or customize exactly how their billing software works
  • Mobile apps cover core invoicing tasks for freelancers who need to send or check invoices away from a computer

Cons

  • Self-hosting requires real technical setup (server provisioning, maintenance, updates) that most non-developers won't want to take on themselves
  • Hosted version's interface is less polished and modern than dedicated SaaS competitors like FreshBooks or Wave
  • Self-hosted users are responsible for their own backups, security patching, and uptime, unlike a managed SaaS product
  • Smaller, less mainstream user base than FreshBooks means fewer third-party tutorials and community troubleshooting resources

Invoice Ninja Pricing Plans

Official pricing as published by Invoice Ninja. Verify current rates before purchasing.

Free (self-hosted)

$0

  • Unlimited invoices when self-hosted
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Pro

$10 /month

  • Hosted version
  • Recurring invoices
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Enterprise

$14 /month

  • Multiple users
  • More storage
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Invoice Ninja’s core appeal rests on a choice most invoicing tools don’t offer: the option to self-host the entire application for free, with no per-invoice or per-client limits, rather than being locked into an ongoing SaaS subscription regardless of how light your actual billing volume is.

Free, Unlimited Self-Hosting

For freelancers, developers, and small agencies comfortable with basic server management, self-hosting Invoice Ninja eliminates recurring software costs entirely — there’s no per-invoice fee, no client cap, and no monthly subscription, since you’re running the open-source application on infrastructure you control. For technically capable users with modest budgets, this can mean genuinely free invoicing indefinitely, a meaningfully different value proposition than even generous free tiers on SaaS competitors.

No Vendor Lock-In

Because Invoice Ninja is open-source, self-hosted users aren’t dependent on the company’s continued existence or business decisions to keep using the software — the code remains usable (and even modifiable) regardless of what happens to the company behind it. For a tool handling ongoing client billing relationships and financial records, this independence from a single vendor’s fate is a real, if often underappreciated, form of risk reduction.

The Hosted Alternative

For users who want Invoice Ninja’s functionality without taking on server management themselves, the hosted Pro and Enterprise tiers work like a standard SaaS product — Invoice Ninja manages the infrastructure, and users pay a straightforward monthly fee. This removes the self-hosting technical burden while still benefiting from the underlying open-source software’s transparency.

The Technical Setup Tradeoff

The free self-hosting option’s main practical limitation is exactly what makes it valuable: it requires real technical comfort with server provisioning, security configuration, ongoing maintenance, and backups. For non-technical freelancers, this isn’t a realistic path, and the choice effectively becomes either developing that technical comfort or simply paying for the hosted tier (at which point the cost-comparison advantage over competitors like FreshBooks narrows considerably).

Pricing

PlanPriceWhat’s included
Free (self-hosted)$0Unlimited invoices, your own server
Pro$10/monthHosted version, recurring invoices
Enterprise$14/monthMultiple users, more storage

Who Should Use Invoice Ninja

Technically comfortable freelancers and developers wanting to eliminate recurring SaaS costs get genuine value from free self-hosting. Users who specifically value open-source software and avoiding vendor lock-in for financial tools find real appeal in its transparency and independence. Non-technical freelancers wanting a polished, fully managed experience without any server management are likely better served by FreshBooks or Wave.

Verdict

Invoice Ninja’s self-hosted free tier is a genuinely distinctive option in the invoicing software category, offering real cost and independence advantages for technically capable users willing to manage their own infrastructure. For users without that technical comfort, the hosted version remains a reasonable but less differentiated choice against more polished dedicated SaaS competitors.

Overall rating: 4.0 / 5

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