SendRecurring - SendRecurring allows you to setup, send, and maintain scheduled email reminders.

Aurox - Designed to help traders make successful trades

Recurrr - Send recurring emails

Moneda CLI - Command line to track cryptocurrency prices

Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.

TradingView - The best charting tool for crypto and stocks