Robinhood - Free stock trading service.
Alpaca Fractional Trading API - Commission-free API to trade & invest for as little as $1
Scout Finance - Free finance app that's like having a Bloomberg in your pocket. Download:
Stonksfolio - Gain insight into the performance of stock & ETF investments
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Freetrade - Invest in stocks & ETFs for free, get started in seconds.