Axiom - Axiom is a general purpose Computer Algebra system.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
ZenRows - Are your web scrapers blocked once and again? ZenRows API handles premium proxies, anti-bot protection bypass, and CAPTCHAs, so you get the HTML from any website with a simple API call.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Orchestra - An open-source robotic process automation system 🚀
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.