Description: InvoicePlane is an open-source self-hosted invoicing application. It allows small businesses to create and manage invoices, quotes, payments and customers. It has features for recurring invoices, tax rates, multiple currencies, invoice templates and more.
Type: software
Pricing: Open Source
Description: Mailman is an open source mailing list management system. It helps manage email discussion and announcement lists, allowing users to subscribe and unsubscribe, and helping admins moderate and post to the lists.
Type: software
Pricing: Free