okke AlternativesInvoicing Software and other similar apps like okke

GnuCash is a versatile financial-accounting software designed for both personal and small-business use. With features like double-entry, scheduled transactions, and multi-currency support, it operates across various platforms, including Windows, Mac, and Linux, ensuring accuracy through professional principles.

Open-source business application suite developed in Python, offering ERP, CRM, e-commerce, and project management, reducing software needs and synchronization costs with over 260 core modules.

ERPNext is a free and open-source integrated Enterprise Resource Planning (ERP) software developed by Frappé Technologies Pvt. Ltd. and is built on MariaDB database system using a Python based server-side framework.

Dolibarr ERP & CRM is a modern and easy to use open-source web software package to manage your business (customers, invoices, orders, products, stocks, agenda, e-mailings, shipments...).

Summit is a modern, self-hostable invoicing and financial management application designed for freelancers, small businesses, and agencies. Create professional invoices, track expenses, generate financial reports, and more.

Skrooge allows you to manage your personal finances, powered by KDE 4.x. Thanks to its many features, it is one of the most powerful way to enter, follow, and analyze your expenses.

Invoice Ninja is a free, open-source solution for invoicing and billing customers. With Invoice Ninja, you can easily build and send beautiful invoices from any device that has access to the web.

Manager is free accounting software for Windows, Mac and Linux.

It features an intuitive and innovative user interface with modules such as cashbook, invoicing, receivables, payables, taxes and comprehensive financial reports.

The desktop edition is free while the cloud edition.

Offers accounting software with payroll, bookkeeping, invoicing, app integration, and inventory tools. Four plans cater to businesses of all sizes. Automates reconciliation and shares with accountants seamlessly. Higher tiers add project tracking.

From invoicing to expense tracking to accounting, Akaunting has all the tools you need to manage your money online, for free.

Comprehensive cloud accounting for small businesses and freelancers; save time billing clients by sending, tracking, and collecting payments swiftly. Generate professional invoices, manage expenses effortlessly, track project time seamlessly, and prepare for tax with ease.

Ledger is a powerful, double-entry accounting system that is accessed from the UNIX command-line. This may put off some users, since there is no flashy UI, but for those who want unparalleled reporting access to their data there are few alternatives.