Electron Toolkit - Toolkit to build and launch Electron apps
Odoo - An all-integrated business app suite to unleash your growth potential.
Startup School - How to start a startup, by Y Combinator
Oracle NetSuite - NetSuite is the leading integrated cloud business software suite, including business accounting, ERP, CRM and ecommerce software.
Tuemilio - Email forms and referral waiting lists for indie makers
Sage Intacct - Intacct is a cloud-based accounting and financial management system that is designed for the businesses of all levels.