OpenTPU: Open-Source Reimplementation of Google Tensor Processing Unit (TPU) (Score: 150+ in 21 hours)

Link: https://readhacker.news/s/6vcaw
Comments: https://readhacker.news/c/6vcaw

Compiler Explorer and the promise of URLs that last forever (Score: 155+ in 4 hours)

Link: https://readhacker.news/s/6veau
Comments: https://readhacker.news/c/6veau

Dependency injection frameworks add confusion (❄️ Score: 150+ in 3 days)

Link: https://readhacker.news/s/6v48d
Comments: https://readhacker.news/c/6v48d

A thought on JavaScript "proof of work" anti-scraper systems (❄️ Score: 150+ in 2 days)

Link: https://readhacker.news/s/6v6CP
Comments: https://readhacker.news/c/6v6CP

Compiling a neural net to C for a speedup (Score: 150+ in 5 hours)

Link: https://readhacker.news/s/6ven7
Comments: https://readhacker.news/c/6ven7

Japan Post launches 'digital address' system (Score: 151+ in 7 hours)

Link: https://readhacker.news/s/6vebv
Comments: https://readhacker.news/c/6vebv

De-anonymization attacks against the privacy coin XMR (Score: 150+ in 10 hours)

Link: https://readhacker.news/s/6vdFW
Comments: https://readhacker.news/c/6vdFW

US Trade Court Finds Trump Tariffs Illegal (🔥 Score: 153+ in 1 hour)

Link: https://readhacker.news/s/6vfs6
Comments: https://readhacker.news/c/6vfs6

Long live American Science and Surplus (which needs your help) (Score: 154+ in 5 hours)

Link: https://readhacker.news/s/6vf4d
Comments: https://readhacker.news/c/6vf4d

LiveStore: State management based on reactive SQLite and built-in sync engine (Score: 150+ in 1 day)

Link: https://readhacker.news/s/6vaeE
Comments: https://readhacker.news/c/6vaeE

A toy RTOS inside Super Mario Bros. using emulator save states (Score: 150+ in 6 hours)

Link: https://readhacker.news/s/6veXt
Comments: https://readhacker.news/c/6veXt

This started as a throwaway metaphor in a blog post, but is now fully runnable: a toy RTOS with preemptive multitasking inside of Super Mario Bros. on the NES.
Essentially, this is:
- A rudimentary preemptive RTOS
- Using an unmodified NES emulator (FCEUX) as the CPU

    - "Unmodified" depending on how you define terms

- With emulator save states as the thread contexts
- With support for (very basic) mutexes, interrupt masking, and condition variables
- Demonstrated using Super Mario Bros. 1-1 with sections of the map dedicated to various synchronization primitives
There are many simplifications and shortcuts taken (doesn't even have task priorities), and it doesn't map 1:1 to true multithreading (e.g., emulator save states represent the state of the entire machine including RAM, whereas thread contexts represent a much more minimal slice), but I think it's A) pretty interesting and B) a unique visceral explanation of threads.

Show HN: Tesseral – Open-Source Auth (Score: 150+ in 13 hours)

Link: https://readhacker.news/s/6vdWD
Comments: https://readhacker.news/c/6vdWD

Hi folks! I'm Ulysse, and Tesseral (https://github.com/tesseral-labs/tesseral) is open-source auth for B2B SaaS.
Early in my career, I worked on enterprise auth and security features at Segment. I've been obsessed with the subtle details of enterprise software ever since. For example, I wrote an implementation of SAML in the early days of the COVID pandemic because I thought it was fun.
Over the years, I've felt frustrated that too few people have seemed interested in making auth obvious for developers of business software. Auth really doesn't need to be so confusing.
We made Tesseral to help software engineers get B2B auth exactly right – and focus their energy on building the features that users want.
You can use Tesseral to stand up a login page, authenticate your users, and manage their access to resources. Think of it like Auth0 or Clerk, but open source and built specifically for B2B apps. Among other things, that means that it’s designed for B2B multi-tenancy and includes enterprise-ready features like single sign-on (SAML SSO), multi-factor authentication (MFA), SCIM provisioning, and role-based access control (RBAC).
For those who expose public APIs, you can use Tesseral to manage API keys for your customers. You can even limit the scope of API keys to specific actions by using our RBAC feature.
We've taken care to make Tesseral powerful and secure enough to power real enterprise software but still leave it simple enough for any software developer to use. You don't have to be a security expert to implement Tesseral. (By default, therefore, Tesseral imposes a few opinions. Let us know if you have a good reason to do something unusual, and we'll work something out.)
If you want to experiment with Tesseral, you can host it yourself or use our hosted service. The hosted service lives at https://console.tesseral.com. You can find documentation here: https://tesseral.com/docs.
Here are a few simple demos:
https://www.youtube.com/watch?v=IhYPzz3vB54
https://www.youtube.com/watch?v=t-JJ8TNjqNU
https://www.youtube.com/watch?v=mwthBIRZO8k
We're in the early stages of the project, so we still have some gaps. We have more features, bug fixes, SDKs, and documentation on the way.
What have we missed? What can we do better? We're eager to hear from the community!

The Blowtorch Theory: A new model for structure formation in the universe (Score: 150+ in 17 hours)

Link: https://readhacker.news/s/6vdBf
Comments: https://readhacker.news/c/6vdBf

Show HN: Porting Terraria and Celeste to WebAssembly (❄️ Score: 152+ in 2 days)

Link: https://readhacker.news/s/6v8SZ
Comments: https://readhacker.news/c/6v8SZ

Visualize and debug Rust programs with a new lens (❄️ Score: 154+ in 3 days)

Link: https://readhacker.news/s/6v4bF
Comments: https://readhacker.news/c/6v4bF

Show HN: Typed-FFmpeg 3.0–Typed Interface to FFmpeg and Visual Filter Editor (Score: 150+ in 4 hours)

Link: https://readhacker.news/s/6vfSu
Comments: https://readhacker.news/c/6vfSu

Hi HN,
I built typed-ffmpeg, a Python package that lets you build FFmpeg filter graphs with full type safety, autocomplete, and validation. It’s inspired by ffmpeg-python, but addresses some long-standing issues like lack of IDE support and fragile CLI strings.
What’s New in v3.0:
• Source filter support (e.g. color, testsrc, etc.)
• Input stream selection (e.g. [0:a], [1:v])
• A new interactive playground where you can:
• Build filter graphs visually
• Generate both FFmpeg CLI and typed Python code
• Paste existing FFmpeg commands and reverse-parse them into graphs
Playground link: https://livingbio.github.io/typed-ffmpeg-playground/
(It’s open source and runs fully in-browser.)
The internal core also supports converting CLI → graph → typed Python code. This is useful for building educational tools, FFmpeg IDEs, or visual editors.
I’d love feedback, bug reports, or ideas for next steps. If you’ve ever struggled with FFmpeg’s CLI or tried to teach it, this might help.
Thanks!
— David (maintainer)

Mistral Agents API (Score: 150+ in 1 day)

Link: https://readhacker.news/s/6vaNm
Comments: https://readhacker.news/c/6vaNm

What If We Had Bigger Brains? Imagining Minds Beyond Ours (❄️ Score: 150+ in 3 days)

Link: https://readhacker.news/s/6v4Cj
Comments: https://readhacker.news/c/6v4Cj

Run a C# file directly using dotnet run app.cs (Score: 150+ in 10 hours)

Link: https://readhacker.news/s/6vfHg
Comments: https://readhacker.news/c/6vfHg

Gurus of 90s Web Design: Zeldman, Siegel, Nielsen (Score: 151+ in 5 hours)

Link: https://readhacker.news/s/6vg7W
Comments: https://readhacker.news/c/6vg7W