I'm working on interactive explorations of algorithms and machine learning. Small, visual, hands-on demos that help build intuition by letting people tweak code/parameters and see how things behave in real time.
Ask HN: What are you working on? (January 2026)
241–250 of 914 posts
Re: Ask HN: What are you working on? (January 2026)
#242Open-source SaaS for every vertical
Re: Ask HN: What are you working on? (January 2026)
#243Would love feedback from other WFH folks — a weird amount of my productivity comes down to how I start the day.
Re: Ask HN: What are you working on? (January 2026)
#244Re: Ask HN: What are you working on? (January 2026)
#245I spent a day over break building a better UX for reviewing coding agent plans.
Plannotator - Annotate and review coding agent plans visually, share with your team, send feedback to the agents with one click.
Demo video: https://www.youtube.com/watch?v=a_AT7cEN_9I
Re: Ask HN: What are you working on? (January 2026)
#246I'm still working on my PDF search engine for desktop: https://www.docgoblin.com/ I'm implementing a bookmark utility right now and hope to add support multiple E-books format in the near future.
A one time payment app - interesting (I'm also working on something with similar moneytization solution). How are things going? I'd love to know the experience of another solopreneur, what stack are you using? I wonder - What are you using to parse PDFs and extract the text? I found that is a nightmare when was doing something similar for WithAudio (my app). - Are you just extracting the text or you are doing any pos…
The app is entirely in Java, with javaFX for the UI and Lucene for the search engine. To read and render PDFs I use PDFium.
Re: Ask HN: What are you working on? (January 2026)
#247Despite being intensely technical and detail-oriented, certifying construction is still mostly done by hand over email!
Our niche is full of folks whose lives we can improve with a portal for document management & comms, plus a sprinkle of AI for document understanding.
If you know someone - anyone - wrangling too many documents via email. Please reach out.
Re: Ask HN: What are you working on? (January 2026)
#248Re: Ask HN: What are you working on? (January 2026)
#249I'm working on Tech Posts ( https://techposts.eu ), a Hacker News for Europe! Since the last time I posted on HN it's gained a decent amount of traffic and users. I'm particularly happy with the jobs section, which is growing into a high signal-noise source for European tech jobs: https://techposts.eu/jobs The reason I started this website is because so much incredible innovation and growth in Europe flies under the…
"Ask TechPosts.eu: Is there an EU Cloudflare alternative? I'm interested in CDN, DDoS mitigation and basic web security." Links to https://techposts.eu/post/153
"3 comments" below it links to https://techposts.eu/post/154
It looks like the latter is correct.
I would have sent feedback direct, but I can't see an about page or anything.
Re: Ask HN: What are you working on? (January 2026)
#250I'm sure there are a ton of other projects out there that do this, but I couldn't find one that fit my needs exactly, so I threw this together in a few hours.
claude-image-renamer uses Claude Code CLI to analyze screenshots and rename them to something actually usable. It combines OCR text extraction with Claude's vision capabilities, so instead of "Screenshot 2025-12-29 at 10.03.10 PM.png" you get something like "vscode_python_debug_settings.png".
A few things it does:
Handles those annoying macOS screenshot filenames with weird Unicode characters
Uses OCR to give Claude more context for better naming
Keeps filenames clean (lowercase, underscores, max 64 chars)
Handles naming conflicts automatically
If you're on macOS, you can also set this up as a Folder Action so screenshots get renamed automatically when they are saved to a folder, typically ~/Desktop. This is useful if you take a lot of screenshots and hate digging through "Screenshot 2025-12..." files later.