@lukkais · X

@Kamphey · X

I made a database of 2,000 google sheets formulas that bring JOY to sheets. includes Star Wars, Lord of the Rings progress bars, and timers, and compasses too.

@Arafat3599651 · X

Just launched 🧮 125+ free calculators — mortgage, BMI, debt payoff, compound interest, calories & more. No signup. No ads. Everything runs in your browser instantly. #buildinpublic #webdev #react

alentodorov · HN

built it in spring 2026--ready to share today. use opus 4.8 to create css and js snipptes to style the websites you visit the way you want. make nytimes more print-like, hn more matrix, or just replace any mention of AI with the :poop-emoji" -- your call.

@Toolvica · X

@KulmanLab · X

- a free and accountless alternative to Autocad

@darsh0891 · X

Fax Cover Sheet PDF is a web-based repository providing zero-cost, printable, and fillable fax cover templates designed for administrative and regulatory compliance. #buildinpublic #saas #webapp

u/averageChilean · Reddit

Built a free tool site to help my brother study — now has 100+ tools, would love feedback My brother's in high school and needed something more visual to study chemistry, physics, and math, so I used Claude to build him a simple site with interactive calculators and visualizers. I'm not a programmer or from a tech background, so without AI this wouldn't have happened, at least not this fast. It ended up helping him a lot more than I expected, so I kept expanding it, added a bunch of other

@CoreToolLaxl · X

I'm building CoreToolLab, a free utility site with calculators for finance, health, education and everyday decisions. We're trying to make each tool genuinely useful rather than just another basic calculator.

u/Current-Parking-1296 · Reddit

dzzz.ai over 90 tools in one website privacy focus Hey r/SideProject , I kept uploading private invoices and contracts to random "free PDF tool" sites just to compress a file. Eventually it occurred to me that the browser can do this locally — so I built dzzz.ai : over 90 tools that run entirely on your device. PDF compress/merge, video trim and conversion, background removal, HEIC→JPG, document scanning with your camera, audio transcription, CSV cleanup. All WebAssembly — ffmpeg, Ghost

@interchained · X

one handle, every surface

@erikdao · X