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: Zotero is a free, open-source reference management software that helps you collect, organize, cite, and share research sources. It works as a standalone program or browser extension that seamlessly integrates with Word, LibreOffice, and Google Docs.
Type: software
Pricing: Free