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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!

Europol flags 4,340 'horrific' URLs linked to The Com

https://www.theregister.com/cyber-crime/2026/07/24/europol-flags-4340-horrific-urls-linked-to-the...
1•ilreb•2m ago•0 comments

Canadian legislator's speech features telltale signs of LLM prompting

https://arstechnica.com/ai/2026/07/canadian-legislator-reads-out-apparent-llm-response-in-floor-s...
1•vok•2m ago•0 comments

Monumental solar observatory in New Mexico

https://www.nytimes.com/2026/07/22/arts/design/charles-ross-star-axis-land-art.html
1•ragall•3m ago•1 comments

Jimothy's Sandwich Stacker

https://fameboy.net/games/sandwich
1•djxjxjcjcjc•4m ago•0 comments

How to Regain the Lost Focus?

1•gabrycina•6m ago•0 comments

The Space Data Centers Situation Is Insane

https://www.youtube.com/watch?v=_qpdUNMt2yg
1•Arodex•6m ago•0 comments

Waymo explores split with Uber as robotaxi tensions deepen

https://www.ft.com/content/9dcb5d72-13aa-4f9c-ac6d-e022860df5ea
1•JumpCrisscross•6m ago•0 comments

Orbital data centers, yes or no?

https://www.youtube.com/watch?v=JAcR7kqOb3o
1•Arodex•7m ago•1 comments

State of the art research publication search

https://demos.exa.ai/scholar
1•shibo•8m ago•0 comments

Network expert Glenn Fiedler warns game devs to fix game vulnerabilities with AI

https://gamesbeat.com/network-expert-glenn-fiedler-warns-game-programmers-to-fix-game-code-vulner...
1•gafferongames•8m ago•0 comments

AI in Linux

https://drewdevault.com/blog/AI-in-Linux/
2•zdw•10m ago•0 comments

Canbus – Networking so simple, even YOU can understand it [video]

https://www.youtube.com/watch?v=QTTCqGtT6I4
2•jval43•11m ago•0 comments

NASA Deep Space ground station in Spain evacuated due to wildfires

https://spaceflightnow.com/2026/07/24/critical-nasa-deep-space-ground-station-in-spain-evacuated-...
1•gonzalohm•13m ago•1 comments

Show HN: SerTerm, a cross-platform, terminal-native serial program

https://github.com/eliachiarucci/SerTerm
2•elia_c•14m ago•0 comments

AI is giving software its quartz moment

https://axiacore.com/blog/ai-is-giving-software-its-quartz-moment-1016/
2•camilonova•19m ago•1 comments

Falsities of LLM Negationists

https://xlii.space/thoughts/falsities-of-llm-negationists/
3•xlii•28m ago•1 comments

Paramount agrees to pause $110B Warner Bros merger as case plays out

https://www.theguardian.com/us-news/2026/jul/24/paramount-warner-bros-merger
2•mellosouls•28m ago•0 comments

Chrrpt 5.0: the ONLY Free Messaging App in the world the USCloudAct can't touch

https://chrrpt.app/
2•zedlasso•29m ago•1 comments

PostgreSQL Extension Catalog

https://pgext.cloud/
3•craigkerstiens•29m ago•0 comments

Trump vows to investigate EU over fining of US tech companies

https://www.bbc.com/news/articles/cvgjenp4680o
6•murderfs•33m ago•0 comments

Am I in the Stack?

https://huggingface.co/spaces/HuggingFaceCode/in-the-stack
4•tardibear•34m ago•0 comments

6am News

https://6am-news.com
2•mastro35•34m ago•2 comments

Uncle Sam tells overseas cybercrooks their visas are canceled

https://www.theregister.com/security/2026/07/24/uncle-sam-tells-overseas-cybercrooks-their-visas-...
2•Bender•35m ago•0 comments

ICC chief prosecutor removed from post over sexual misconduct allegations

https://apnews.com/article/icc-court-prosecutor-karim-khan-united-nations-5a9490e98b74f3bf13f5eae...
3•ledoge•35m ago•0 comments

Judge rebuffs Trump admin demand for phone records from NYT reporters

https://arstechnica.com/tech-policy/2026/07/judge-rebuffs-trump-admin-demand-for-phone-records-fr...
4•Bender•35m ago•0 comments

RFK Jr.'s hand-picked committee approves manufacture of peptides he uses

https://arstechnica.com/health/2026/07/rfk-jr-s-hand-picked-committee-approves-manufacture-of-pep...
5•Bender•36m ago•0 comments

Prototype: Grounding AI and LLMs with Overture's Cross-Theme Knowledge Graph

https://overturemaps.org/blog/2026/from-concept-to-prototype-grounding-ai-llms-with-overtures-cro...
3•benp_wherobots•36m ago•0 comments

Bobby Gray's Star Lawyers Can't Fix TEXITcoin's Math Problem

https://www.disruptionbanking.com/2026/07/23/bobby-grays-star-lawyers-cant-fix-texitcoins-math-pr...
2•bmcdresson•37m ago•0 comments

Open-Sourcing Booklet

https://www.philipithomas.com/open-sourcing-booklet
2•philip1209•39m ago•0 comments

Show HN: Max Studio Tools (C++ DSP Modules for Max and Ableton Live)

https://github.com/apresta/max-studio-tools
5•apresta•40m ago•0 comments