Ask HN: What Are You Working On? (June 2025)

I'm working on Alis Studio (https://github.com/alphatica/alis)- software to manage portfolios and research stock market ideas.

It's an MVP but perfectly usable. I needed features that I couldn't find anywhere else:

Parameter optimization with a genetic algorithm

Fuzzy optimization: randomly remove trades or whole markets and see what happens

Data mining: find rules how to exit trades sooner for better profit

Compare strategy results to random trading

Check current drawdown for statistical significance

Write trading systems in Java so I can test every idea under the sun and never be held back by some custom "scripting" language.

Of course, it's open-source. A GitHub star is much appreciated. Thanks!

Just launched NanoAPI Cloud, a tool to auto-generate visual views of your software architecture.

In the coming weeks we’ll also be launching linking and AI functionality to provide better context to AI and humans alike.

We’re launching today! https://launch.nanoapi.io

I'm building a site that tracks the price of power tool batteries (currently Milwaukee and Dewalt). It's been an itch I've wanted to scratch for a while so I would know when the battery was a good price vs. the Ah rating. The prices are scraped nearly daily and plotted on a price-per-ah vs. total Ah chart.

https://drillhound.com/batteries

Years ago I was making a diagram editor with the intent of doing code generation from diagrams (like simulink, not stateflow). I started with splines for the connections and decided straight lines and junctions would be better for complex diagrams. I realized that a better way to internally define the connecting wires is via a set of lines and their connectivity (vs their endpoint coordinates). Imagine each line segment is defined by a direction (vertical or horizontal) and a position (perpendicular distance from the origin) Like ax+by=d where a and b are either 0 or 1. You also need to define which other lines it connects to. Given the list of connections you can then calculate the intersections at rendering time. By sorting the list of connections you can render the line without features at the start and end, and then draw junctions for any intermediate connections. The beauty of this would be to allow dragging blocks around and having the lines follow with the junctions passing through each other as needed. There is some housekeeping with this data structure (merging colinear segments that connect, breaking segments when needed) but the UI for dragging should be much better than anything out there.

> as a former LaTeX enthusiast, it's pretty close. It's readable, minimalist.

Really nice! But you still need at least basic justification if you want to relate it to LaTeX. ;)