I have a nice garden going right now. TAM Jalapeños have taken the longest to flower, almost thought they wouldn’t. Sweet cherry peppers have been plentiful. Lost my zucchini crop to squash vine borers.
Ask HN: What Are You Working On? (June 2025)
31–40 of 1001 posts
Re: Ask HN: What Are You Working On? (June 2025)
#32Still working on sudoku variants app (posted show hn 5 months ago), reworking solving algorithms for better hints and difficulty categorization.
Re: Ask HN: What Are You Working On? (June 2025)
#33A Parquet file compactor. I have a client whose data lakes are partitioned by date, and obviously they end up with thousands of files all containing single/dozens/thousands of rows.
I’d estimate 30-40% of their S3 bill could be eliminated just by properly compacting and sorting the data. I took it as an opportunity to learn DuckDB, and decided to build a tool that does this. I’ll release it tomorrow or Tuesday as FOSS.
Re: Ask HN: What Are You Working On? (June 2025)
#34I've been slowly building a website full of daily puzzle games (https://regularly.co/). I built the first game for my wife (https://regularly.co/countable) which she plays every day. Floored is my personal favourite, I find it deceptively challenging
Re: Ask HN: What Are You Working On? (June 2025)
#35I finally compiled and expanded on all my various blog posts, tutorials and other Python goodness into a book: Working with Python. It is available as a free pdf download at: https://mkaz.blog/working-with-python/
It's grown over a dozen or so years and when I finally decide to compile into a book, everyone now uses AI and no longer read and learn from books but instead through LLMs.
Re: Ask HN: What Are You Working On? (June 2025)
#36I've been building an interactive nuclear reactor scoping tool to help people build intuition about how different types of nuclear reactors work and cost at different sizes. I ran a bunch of simple reactor simulations and this basically interpolates between them. https://whatisnuclear.com/neutronics-scoping-tool.html
I did a screenshare demo of it yesterday: https://www.youtube.com/watch?v=GQzDfrdf71Y
Re: Ask HN: What Are You Working On? (June 2025)
#37After 2+ years of maintaining the FOSS lightweight Reddit frontend Redlib [0], I realized that my niche but extremely detailed knowledge and experience of using Reddit's endpoints might be useful. After reverse engineering the mobile app and writing code to emulate nearly every aspect of its behavior, plus writing a codegen framework that will auto-update my code from analyzing the behavior from an Android emulator, I can pretty easily replay common user flows from any IP around the world, collecting and extracting the data. Some use cases:
* OSINT (r00m101 just beat me to it by launching...)
* Research into recommendation algorithms, advertising placement algorithms, etc
* Marketing (ad libraries, detailed analysis of content given data not even exposed to the mobile app due to some interesting side channels, things like trend analysis, etc)
* Market research for products
* Sales teams can use it to find exact mentions of other products. Eg: selling crash reporting software? Look up your target accounts' brands and find examples of complaints.
Plus a few more with more imagination.
So I'm working on a site that allows user access to some of the read-only functions available here. Coming soon :tm:. Been really fun building it all in Rust, though :) If you're interested in anything here, email in profile.
Re: Ask HN: What Are You Working On? (June 2025)
#38I took a break from a toxic big tech job.
I spent a couple months travelling.
Then I spent a couple months trying to use transformer-based models of sorts to detect short-lived inefficiencies in the stock market to try to create a passive income trading bot. I know short-term quant trading is super hard to be profitable, but Rentech did it, so I figured I'd throw a couple months at it.
Then I spent another couple months on AI for science, robotic lab automation, and trying to get AI to do AI research inside a Docker container.
Re: Ask HN: What Are You Working On? (June 2025)
#39A mail/spam filter to flag emails whose sender's domain is less than a year old.
Re: Ask HN: What Are You Working On? (June 2025)
#40Our staining our log home project has evolved into a replacing some logs project after demolishing the sketchy balcony that came with the house and discovering a bunch of rot.
Frankly, I'm astonished that it hadn't collapsed out from under me when I was shoveling snow off of it this past winter. Behind the ledger that tied the balcony to the house was a mess of pressure treated lumber scabbed into a cavity in the logs formed by rot, none of it well-fastened or fastened into truly sound wood.