Robinhood - Free stock trading service.
Alpaca Fractional Trading API - Commission-free API to trade & invest for as little as $1
Stonksfolio - Gain insight into the performance of stock & ETF investments
Freetrade - Invest in stocks & ETFs for free, get started in seconds.
Argent - Crypto's first one tap app to earn & invest
paaid - Simple stock tracking for everyone