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ppymouon Ask HN: What are you working on? (August 2026)

I have been building a PDF reader with dark mode that supports image properly with vimimum navigations. Been using it for the past few months and really happy with the result. Finally got around to publishing it here: https://github.com/moomou/xeil

ppymouon Ask HN: What are tools you have made for yourself since the advent of AI?

I built a mac native PDF reader called Xeil with toggleable darkmode that preserves images (inspired by veil), vim keybinding and fuzzy search. Before this, I was using Skim with inverted color to simulate dark mode.

Dont have the code up for sharing but I documented xeil (along with a few other tools) in my blog: https://paul.mou.dev/posts/2026-04-28-software-for-one/#xeil

ppymouon Ask HN: Share your personal website

https://paul.mou.dev

ppymouon Listening with LLM

Thanks! Did not know about /r/LocalLLaMA

ppymouon Listening with LLM

Thanks for the comment. I will be chronicling my progress on the blog!

ppymouon Listening with LLM

Thanks for reading and yes you are right, the input audios are clips of music;

MusicCaps [1] is a dataset containing pairs of music audio and natural language description of the clip; the reason why the result is good imo is because the trained model was able to generate a description with features of the ground truth

[1] https://huggingface.co/datasets/google/MusicCaps

ppymouon Listening with LLM

Haha thanks; the html is on Github https://github.com/moomou/moomou.github.io/blob/master/resum... and from there you can see the imported css etc.; be warned though, the resume & css have been accumulated over the years so they are not particularly clean

ppymouon Show HN: Sloth – Smart copy and paste manager for all your snippets

Noted. Will do. Definitely plan to make to release on all OS - but focusing on gathering feedback right now.

ppymouon Show HN: Sloth – Smart copy and paste manager for all your snippets

Right now, Sloth runs on OSX 10.8 or later. There is no storage limit; items not used will be autodeleted after n days (set in config).

Love to hear what you think of it!

ppymouon Ask HN: What are you working on?

https://ohsloth.com

Sloth is a modern day copy and paste manager that allows you to search snippets by both content and context. Context here being what program you copied from and the type of text (whehter it's an ip, python, or bash script, etc.).

Right now I am working on a custom machine learning model to do better text classification.

It's built on electron and I am adding slack integration to create a shared clipboard. Essentially, slack would act as a cloud storage.

ppymouon Offer HN: Free logo design for an open source project

https://ohsloth.com/

Ohsloth is an open source copy and paste manager that aims to provide contextual actions based on snippet content.

It is still super early but it definitely could use some design love!

ppymouon Unsupervised Feature Learning and Deep Learning Tutorial

For anyone interested, I have been really interested in deep learning and have been using the following resources:

For image processing (CNN) https://cs231n.github.io/

For natural language processing (RNN) http://cs224d.stanford.edu/syllabus.html

I also found the following coursera helpful https://www.coursera.org/course/neuralnets https://www.coursera.org/learn/machine-learning

ppymouon Ask HN : What side project are you working on?

Working on providing contextual information to whatever you do online: https://cueb.io/

ppymouon Redis Geo

I never knew that redis can be extended for geo. This is really cool.

I researched geodb a while back and I only found PostGIS but I recently found out that elastic search also supports geo features.

Shameless plug - This is the simple API I built on top of PostGIS https://github.com/moo-mou/GeoGo

ppymouon Show HN: Godray – a simple ray tracer

Ah. An oversight on our part, we will make it MIT licensed so feel free to do whatever you want with it.

ppymouon Show HN: Godray – a simple ray tracer

The code should have no dependency other the standard go library.

You should see an output.png if it run successfully in the same folder.

Sorry, no easy access to a windows right now, but I will try it out on when I get a chance.

ppymouon Show HN: Godray – a simple ray tracer

For me, going through wikipedia article on phong and working out the math with my friends (instead of just blindly translating the equations to code) really helped me understand the basics.

In order to learn more (I admittedly know very little about anything other than the phong model - the other friend is much more knowledgable), I presume either a textbook or a course notes like this https://www.student.cs.uwaterloo.ca/~cs488/notes.pdf will probably help.

ppymouon Show HN: Godray – a simple ray tracer

Wrote this with friend as a learning project for golang. Any golang tips would be much appreciated.

ppymouon Researchers Announce Advance in Image-Recognition Software

Out of curiosity, how well would these model work on computer generated graphics (say Skyrim)?

My gut feeling says it will work but I am curious if the model need to be trained separately for those.

ppymouon Show HN: Vimusical – make music while using Vim [video]

Thanks for the idea. I definitely see feedback loop as one potential major case for this.

Another idea I was thinking about is altering the music the programmer is playing in some way instead of generating music.

ppymouon Show HN: Vimusical – make music while using Vim [video]

Agreed. I am working on putting up documentation on how to set it up and get it running locally. There is still tons of work to be done though.

I deliberately chose to release as early as possible to find out if what people think of the project since I tend to have a tendency of taking forever to get feedback.

ppymouon Show HN: Vimusical – make music while using Vim [video]

Oops. Looks I missed a push to Github.

But in theory, any soundfont file will do. There is a bunch of sound fonts here:

http://soundfonts.homemusician.net/piano_soundfonts/page1/in...

ppymouon Show HN: Vimusical – make music while using Vim [video]

Right. I wasn't sure about that one too.

ppymouon Show HN: Vimusical – make music while using Vim [video]

This is early alpha quality, but I am really interested in hearing feedback from the community.

Please let me know what you guys think!

ppymouon [dead]

Ah ok. Didn't know that. Thanks for the tip.

ppymouon Show HN: Ekho, a simple way to add voice interactivity to your site

Thanks!

ppymouon Show HN: Ekho, a simple way to add voice interactivity to your site

Hi. We are currently using the Chrome's built-in speech recognition and so it only works for Chrome at the moment.

It should not be too much work to add in external speech recognition library later on.

ppymouon A simple way to validate your startup idea

I like the idea.

But I also believe that solving personal problem is a good place to start. After all, if one person has a problem, it is likely that there are at least 5 other person who shares the pain.

ppymouon Solo.im – A single founder peer group

Just signed up. I would love if you changed the signup form to use textarea rather than input though...

ppymouon Show HN: A search engine that lets you 'add' words as vectors

Great writeup. Curious, are there clear advantages that the vector representation has over graph models (FB graph search, Google Knowledge graph)?