A calculator that estimates what a car in Singapore costs to own. Put in up to four cars and it estimates the monthly cost after the loan, depreciation, COE, PARF rebate and running costs, not just the asking price. It can also tell you whether to keep your current car or switch. The latest COE results come in by themselves from data.gov.sg, with the history back to 2010. You can sign in to save comparisons or add a car for others to use. I keep going back in as Budget 2026 and the EV incentives change the rules.
A markets dashboard I am building for myself. It pulls crypto price data from Binance, every pair priced in USDT, and puts it into one format. On top of that it runs a couple of simple signals, a moving average crossover and RSI, and can alert you in the browser when one changes. Stocks were in there too for a while. I have taken them out for now. It runs on free plans, so the first load after a quiet spell can take a minute to wake up. It only reads the market and never trades. The data is not necessarily up to date or complete, so play with it if you want, but never use it to make financial decisions. Still early days.
My own AI agent. The agent is OpenClaw, an open-source personal AI assistant. I set it up myself and run it around the clock on a Raspberry Pi at home. It runs on the ChatGPT subscription I already pay for, so I don't pay per use. I talk to it through a chat app on my phone. Right now it sends me a morning news summary and tells me when some public information changes. I haven't connected it to my email or notes yet, because I don't trust it enough. It's just for me, so there's no link to try it.