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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!

Same – I built a toy to see what the world has in common

https://same.imelabs.co.uk
1•wrams•13s ago•0 comments

Bolt Graphics' Advanced GPU to Take on Nvidia – Architosh

https://architosh.com/2026/07/bolt-graphics-advanced-gpu-to-take-on-nvidia/
1•rbanffy•53s ago•0 comments

Responsibility Is Taken Before It Is Given

https://lalitm.com/responsibility-is-taken-before-it-is-given/
1•kiyanwang•1m ago•0 comments

Cursiva is an open-source tool to compile ATS LaTeX resumes with LangGraph

https://www.cursiva.se/
1•heishi•1m ago•0 comments

Can an LLM price a World Cup match better than the market (and make money)?

https://christian.bock.bio/posts/frontier_xg_worldcup/
1•Pseudomanifold•1m ago•0 comments

The sorry state of SKILL distribution

https://blog.trailofbits.com/2026/06/03/the-sorry-state-of-skill-distribution/
1•michael-sumner•1m ago•0 comments

Show HN: Live preview/render Go templates with custom data

https://github.com/vividvilla/gotp
1•v512•3m ago•0 comments

Show HN: Douze – turn any website into MCP tools from the browser session

https://github.com/jamalavedra/douze
1•jamalavedra•3m ago•0 comments

Photon Gas

https://en.wikipedia.org/wiki/Photon_gas
1•maxall4•6m ago•0 comments

Hiding a Prompt in a Tokenizer

https://stephantul.github.io/blog/prompt/
1•stephantul•11m ago•0 comments

Startup Sells Synthetic Influencers Manipulates Social Media as a Service (2025)

https://www.404media.co/a16z-backed-startup-sells-thousands-of-synthetic-influencers-to-manipulat...
1•Bluestein•11m ago•0 comments

Inside The Fake Copyright Racket Silencing News Outlets

https://www.occrp.org/en/news/i-terminated-this-channel-inside-the-fake-copyright-racket-silencin...
1•robtherobber•12m ago•0 comments

Dactyl – Build real iOS apps just by describing them

https://dactyl.dev/
2•losfair•14m ago•0 comments

Ask HN: When will Trump impose tariffs on semiconductors from Asia?

2•roschdal•14m ago•0 comments

Fast drilldown dashboards from a single Parquet file

https://www.hamiltonulmer.com/customer-dashboards-r2-hyparquet/
1•v3gas•14m ago•0 comments

Ateegnas, An AI native Data Annotation tool.

https://ateegnas.com
1•Manas2231•14m ago•1 comments

How LLMs remember, schedule, and stream tokens

https://ssenthilnathan3.github.io/blog/kutty-vllm/
2•nathaah3•15m ago•0 comments

Show HN: Structured code review findings on open source repos

https://app.contextgoblin.com/demo/reviews
1•clemens1010•17m ago•0 comments

Grok Bot 0.18 – reconstructed source code

https://github.com/b-nnett/grok-bot-0.18-reconstructed
1•mak8•17m ago•0 comments

How to Compress a PDF for Email Attachments (Under 10MB)

https://www.uselocalpdf.com/blog/how-to-compress-pdf-for-email
1•tvictano•18m ago•0 comments

The Dictionary of Obscure Sorrows: Uncommonly Lovely Invented Words (2024)

https://www.themarginalian.org/2024/04/12/dictionary-of-obscure-sorrows/
1•robtherobber•20m ago•0 comments

The Only Prompting Guide You'll Use

2•writebysachin•20m ago•0 comments

Most AI Work Can Wait

https://tomtunguz.com/ai-execution-routing/
1•walterbell•24m ago•0 comments

Show HN: Cc-context-telemetry – context and rate-limit % in Claude Code's bar

https://github.com/technical-turtle/cc-context-telemetry
1•tech_turtle•25m ago•0 comments

Artists Built a Site to Escape AI. Scrapers Are Coming for It Anyway

https://www.forbes.com/sites/robsalkowitz/2026/08/23/artists-built-a-site-to-escape-ai-scrapers-a...
3•theshrike79•27m ago•0 comments

Hybrid energy system cools and generates electricity and hot water

https://www.heise.de/en/news/Hybrid-energy-system-cools-and-generates-electricity-and-hot-water-1...
4•doener•27m ago•0 comments

Anger, Anxiety and Agency

https://lucumr.pocoo.org/2026/8/24/anger-anxiety-agency/
2•tosh•28m ago•0 comments

Nvidia announces AI-related price hikes

https://www.taipeitimes.com/News/biz/archives/2026/08/24/2003862999
2•mgh2•31m ago•1 comments

The State of Open Source Supply Chain Attacks

https://www.stepsecurity.io/blog/state-of-open-source-supply-chain-attacks
1•varunsharma07•34m ago•0 comments

Engineer earns a year's salary in 2 months by doing RLFH tasks

https://twitter.com/TheBengaluruGuy/status/2091357126409281957
2•TheBengaluruGuy•34m ago•0 comments