Blank Invoice Maker – free, no-signup client-side invoice tool
Free local invoice tool, but remove.bg clones proved this model gets crowded fast.

Yet another invoice generator, but the local JSON save avoids signup.
Freelancers, contractors, and small business owners
Wave Invoice · Zoho Invoice · Invoice Simple
Free local invoice tool, but remove.bg clones proved this model gets crowded fast.
Instant, browser-only invoicing is the project's honest selling point — everything stays client-side and you can add unlimited line items, pick from 15 templates, and hit Print → Save as PDF immediately. The UX is straightforward and trust-friendly (no account, no cloud), but it's essentially a polished point tool: handy for one-off invoices but lacks invoicing workflow features like recurring bills, deliveries, or storage/management of past invoices.
Yet another self-hosted invoicing tool competing with Invoice Ninja's existing self-hosted option.
Useful free document generators, but generic PDF tools already handle these templates.
Another email-to-accounting automation tool competing with Dext, Bill.com, and AutoEntry.
Incoterms 2020 and SOLAS compliance baked into free web forms that actually email PDFs.