Apps similar to Invoice Ninja include Summit Finance, which is free and open source. Other options are Cattr, Midday, Clockify and InvoiceFeed. There's no shortage of Invoicing Software like Invoice Ninja, with more than 100 alternatives for the web, iPhone, Mac, Windows and Android.
Klokki was created to solve an annoying issue that many freelancer and makers face, which is forgetting to start and pause a timer, during the work. The solution is automation, but we knew that people still want to control what should be tracked.
Billr is open-source (Apache-2.0) invoicing you can self-host for free on Supabase, with an MCP server built in. Connect Claude Code, Codex, Cursor or any MCP client over OAuth and your agent can log time, track expenses, draft estimates and send invoices through 53 tools, with...
Zybra is an easy & fast GST Accounting Software for Small & Medium Scale Business.
All-in-one platform for digital signature, electronic invoicing, and document automation to streamline business workflows.
Invoice2go is a complete billing solution for small businesses with invoicing, estimates, payment, tracking, stats and more.
United States
hrglass is an end-to-end Project Management to Invoicing app for freelancers and small businesses. Track time with precision using the built-in timer. Create tasks billed by the hour, a fixed rate, or a multiplier. Get expenses reported and billed in 2 clicks.
Orasan is a time tracking app for freelancers. The name is Filipino for clock. It helps you run projects and tasks, track time with timers, and—on Pro—turn completed work into invoices with PDF export, so you spend less time reconstructing your week in a spreadsheet.
Philippines
Free and simple online invoice template for your business. Fully editable template.Automatically calculates taxes and totals for you. Make invoices online and convert it to PDF. No limits. No registration required.
Simple Invoice Generator is a free web-based invoicing tool built for freelancers, consultants, and small business owners who need professional invoices without the complexity of full accounting software.
Serbia
Invoicer is a free, native Mac app designed for freelancers who need a fast, offline-friendly way to create and manage professional invoices. It focuses on a clean macOS experience, making it easy to stay organized across clients, services, and business profiles.
ServiceInvoice helps service businesses manage customers, create professional invoices, and organize completed work from one easy-to-use platform.
The Flat Tomato is a beautifully designed timer for people who want to avoid distractions and get more done!
Spain
EU
