Startup School - How to start a startup, by Y Combinator
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Electron Toolkit - Toolkit to build and launch Electron apps
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Rippling - One directory for employee information across IT, HR, legal, finance and facilities.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.