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Show HN: Reaktiv – I built Excel-like reactive programming for Python

https://bui.app/when-frontend-reactivity-meets-backend-python-the-story-of-my-first-1-000-download-library/
2•buibuibui•1y ago
Hi HN! I created Reaktiv, a Python library bringing reactive programming to the backend world that recently hit 1,000+ monthly downloads.

I'm actively promoting it because I believe signal-based reactivity (a concept that spread rapidly in frontend development) has huge untapped potential in Python. My breakthrough came when I stopped describing it as "Angular signals for Python" and started calling it "Excel-like computation graphs" - suddenly Python developers understood the value.

The library automatically tracks dependencies between computations, only recalculating values when dependencies change. This eliminates manual dependency tracking, prevents synchronization bugs, and reduces cognitive load when managing complex state.

Interestingly, I've noticed some initial interest from data scientists, though I'm still exploring what specific problems it might solve for them. I also believe the Home Assistant/IoT communities could benefit greatly from this approach.

Would love your thoughts on bringing frontend patterns to backend development!

Building Git infrastructure for agent-scale development

https://github.blog/engineering/architecture-optimization/building-git-infrastructure-for-agent-s...
1•edmorley•1m ago•0 comments

Show HN: I build a newsreader-like alternative interface for my website

http://qdb.us/forte/
1•forgotmypw17•2m ago•0 comments

Toward provably private learning from federated data

https://research.google/blog/toward-provably-private-learning-from-federated-data/
1•gmays•6m ago•0 comments

Janet on x32: 32-bit Pointers, 64-bit Speed, 25% Less RAM

https://alexalejandre.com/programming/lisp/janet-for-the-x32-abi/
1•veqq•7m ago•0 comments

Show HN: Vokalu – Windows/Mac dictation, free on-device or 2¢/min in the cloud

https://vokalu.com/
1•whatisofdsk•7m ago•1 comments

You Are an Expert Software Engineer [Krazam] [video]

https://www.youtube.com/watch?v=0otdTJa9IUc
2•zeristor•7m ago•0 comments

Apple's Smart Home Push Includes Doorbell, Lock, Thermostat Codeveloped with LG

https://www.bloomberg.com/news/articles/2026-10-06/apple-s-smart-home-push-includes-doorbell-lock...
5•marc__1•9m ago•2 comments

Bitcoin Rebound Revives Debate over a New Crypto Cycle

https://discord.com/channels/1519570089488289956/1522069205795606650/1556860425667215462
1•joeymabia1•9m ago•0 comments

Vecos a windows like operating system for the vectrex for the UVMC2 [video]

https://www.youtube.com/watch?v=9ranfp_vz30
1•CharlesW•11m ago•0 comments

Mathematical manuscripts and supporting proof artifacts produced by OpenAI

https://github.com/openai/math
15•vikas-sharma•11m ago•0 comments

toks: the best tokenizer on Earth

https://actual.inc/company/blog/introducing-toks
1•Philpax•11m ago•0 comments

Passion driven web arcade by students with no ads, sign ups, etc.

https://usforge.usforge.workers.dev/
2•LazyGold•12m ago•0 comments

Solving Open Research Problems Together

https://research.meta.ai/blog/solving-open-research-problems-together
1•gmays•13m ago•0 comments

An Open Letter to Steven Pinker on AI

https://www.astralcodexten.com/p/an-open-letter-to-steven-pinker-on
2•ad8e•14m ago•0 comments

Over My Dead Pencil

https://world.hey.com/dhh/over-my-dead-pencil-fb0f3647
1•duck•15m ago•0 comments

One Minnesotan's longshot plan to take down the company behind Flock cameras

https://www.startribune.com/amid-flock-backlash-one-minnesotans-longshot-plan-to-take-down-the-co...
1•bradleyankrom•16m ago•0 comments

The Performance of Open Source Software: Ninja

https://aosabook.org/en/posa/ninja.html
1•birdculture•16m ago•0 comments

Sharing AI Progress in Mathematics

https://openai.com/index/sharing-ai-progress-in-mathematics/
37•OfficialTurkey•16m ago•8 comments

Tuesday Morning Topline: Waymos Not Allowed Near Waterfront for Fleet Week

https://sfist.com/2026/10/06/waymos-not-allowed-near-waterfront-for-fleet-week/
1•mikhael•19m ago•0 comments

Replay workflows with Epiq, a next gen issue tracker

https://github.com/ljtn/epiq
1•ionetan•19m ago•0 comments

What If Pull Requests Had an Explain Command?

https://github.com/rajatrao/PR_explain
1•raorajat007•19m ago•0 comments

Anduril lands $2.9B Navy submarine shipyard contract

https://www.cnbc.com/2026/10/06/anduril-navy-submarine-shipyard-contract.html
1•Teever•22m ago•0 comments

The role of cat eye narrowing movements in cat–human communication (2020)

https://www.nature.com/articles/s41598-020-73426-0
2•bushwart•23m ago•0 comments

Amazon Alexa won't stop saying 'lalala'

https://www.androidauthority.com/amazon-alexa-la-la-la-3719167/
2•cribwi•23m ago•0 comments

What stops a small language model from driving a database agent

https://arxiv.org/abs/2609.21341
1•abdullahk0634•23m ago•1 comments

CoMaps Uses Wikimedia Enterprise to Bring Wikipedia to Their Offline Maps

https://enterprise.wikimedia.com/blog/comaps-benefits-from-enterprise-free-access/
1•pizzaiolo•24m ago•0 comments

The Query Transformation Pipeline

https://readyset.io/blog/how-readyset-rewrites-your-sql-inside-the-query-transformation-pipeline
1•gvsg-rs•25m ago•0 comments

The Instant Karma Machine [video]

https://www.youtube.com/watch?v=JDpX2mvNpvU
1•AJRF•26m ago•0 comments

Nuking stats problems with a probabilistic programming language

https://jo3-l.dev/posts/probabilistic-programming/
1•jo3_l•27m ago•0 comments

Orgledge – Find knowledge risks in engineering teams from GitHub activity

https://www.orgledge.com/
1•dogansahindev•31m ago•0 comments