TeX4PPT and TeXpoint. It's much more professional but it is not for free except for a one-month trial.
If you prefer knit clothing over latex, there are five relevant blogs:
Internet-Connected Battery Could Bring Smoke Alarms Online - Roost’s batteries will let smoke alarms send alerts via smartphone, and may bring other battery-powered devices online, too. A startup has come up with a...
7 hours ago