GnuCash is personal and small-business financial-accounting software, freely licensed under the GNU GPL and available for GNU/Linux, BSD, Solaris, Mac OS X and Microsoft Windows.
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...).
Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing.
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.
Full-featured work and project management solution dedicated to project-based small businesses and teams who want to manage projects from start to finish.
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.
WatchMe is a simple timer program that can be used to time a number of different tasks or events together or indepenedently of each other. You can easily name each timer and track information about what you are timing - a great solution for those who need to track their time for...