Robinhood - Free stock trading service.
Stockpile - Stockpile is a free online inventory system for small business and at home uses.
Rally Rd. - Invest in blue-chip classic cars like stocks
inFlow Inventory - inFlow Inventory is inventory management software for small businesses.
Freetrade - Invest in stocks & ETFs for free, get started in seconds.
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.