Apps similar to Clams include GnuCash, which is free and open source. Other options are ERPNext, Frappe Books, Dolibarr and Invoice Ninja. There's no shortage of Invoicing Software like Clams, with more than 50 alternatives for the web, Mac, Windows, Android and iPhone.
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.
United States
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.
United Kingdom
From the makers of ERPNext, Frappe Books simplifies invoicing, billing, and accounting for freelancers and small business owners. Create professional invoices, generate beautiful PDFs and send them to your customers.
India
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...).
France
EU
Free, open-source invoicing and billing platform providing PDF invoice generation, client payment options through 30+ gateways, multiple templates, company logo addition, team roles, time tracking, advanced customization through paid plans, and no installation required.
United States
GreenStash is a simple FOSS android app to help you plan and manage your savings goals easily and establish the habit of saving money.
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.
FranceEU
Oinkoin Money Manager makes managing personal finances easy and secure. It is light and easy to use. You need just few taps to keep track of your expenses. Simplicity and Security are our two main drivers: Oinkoin is an offline and ad-free app.
AustriaEU
Streamline task management with visual boards, schedule resources, track time and expenses automatically, invoice clients, collaborate with teams and clients on one platform, monitor project profitability and performance, and manage work on mobile devices.
RomaniaEU
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.
United States
InvoicePlane is a self-hosted open source application for managing your quotes, invoices, clients and payments. The application comes with various options, templates and settings to customize your invoicing experience.
Wave makes it easy to be your own boss. Just do what you're good at, and lean on Wave's smart online software for help with invoicing, accounting and payroll.
United States
