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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!

Show HN: Ploof – The agent-native CLI for generating images, video, and audio

https://github.com/miketromba/ploof
1•miketromba•2m ago•0 comments

Mullvad's co-founder is bankrolling the far right

https://korben.info/en/mullvad-cofounder-funding-far-right.html
2•frrn•3m ago•0 comments

Ask HN: Why don't we just JIT to WASM/ASM? Why are compilers like GCC SO slow?

1•tristenharr•3m ago•0 comments

You Can't Fight Enshittification (But We Can)

https://doctorow.medium.com/https-pluralistic-net-2025-07-31-unsatisfying-answers-systemic-proble...
2•jamesgill•4m ago•0 comments

No Warrant, No Reason, No Notice: Canada's New Disconnect Power

https://foundationforfreedomonline.com/canada-bill-disconnect-citizens-from-internet/
1•iamnothere•4m ago•0 comments

8090 Raises $135M Series A

https://www.8090.ai/blog/series-a
1•doppp•6m ago•0 comments

Amazon's brutal AI-centric app-ification of HR

https://www.fastcompany.com/91565321/amazon-is-taking-human-out-of-hr-ai-chatbot-app-aza
1•swolpers•6m ago•0 comments

US Supreme Court rules geofence warrants require constitutional protections

https://www.theguardian.com/us-news/2026/jun/29/supreme-court-geofence-warrants-case-decision
4•cdrnsf•9m ago•0 comments

What happened after the Roman Empire ceased to be in 476?

https://disassociated.com/what-happened-after-roman-empire-ceased-476/
1•Brajeshwar•10m ago•0 comments

Worse Is Better

https://blog.ploeh.dk/2026/06/29/worse-is-better/
2•nosky•10m ago•0 comments

Boys Who Chased the Sun

https://bakulaa.substack.com/p/the-boys-who-chased-the-sun
1•vednig•10m ago•0 comments

Virtualize in macOS from Web

https://makeprog.com/products/virtualprog
1•rbmanian75•12m ago•0 comments

Ansede – an offline SAST scanner I built to catch IDOR and auth bypass

https://github.com/mattybellx/Ansede
1•mattybell•12m ago•1 comments

8090 Raises $135M Series A

https://twitter.com/chamath/status/2071571183665881515
1•doppp•12m ago•0 comments

Apple seeks Trump admin approval to buy memory from blacklisted Chinese company

https://macdailynews.com/2026/06/29/apple-seeks-trump-admin-approval-to-buy-memory-chips-from-bla...
1•speckx•13m ago•0 comments

Argus for Claude Code: run repetitive AI workflows with 80% fewer tokens

https://github.com/botcircuits-ai/botcircuits-argus
1•nexcatara•13m ago•0 comments

Show HN: Run AI chat, image gen, vision, and voice offline on your Mac

https://github.com/off-grid-ai
4•olie_h•15m ago•0 comments

RIP Companion Cube

https://old.reddit.com/r/dbrand/comments/1uivg8m/rip_companion_cube/
1•x01•16m ago•0 comments

UK firm bombarded debt-ridden people with 5.5M texts

https://www.theregister.com/public-sector/2026/06/29/uk-firm-bombarded-debt-ridden-people-with-55...
1•Bender•16m ago•0 comments

Rocket Lab Acquires Iridium Communications

https://arstechnica.com/space/2026/06/in-a-bold-move-rocket-lab-acquires-iridium-communications/
1•jamdesk•16m ago•0 comments

AI may be good at finding security vulnerabilities but cant beat human stupidity

https://www.theregister.com/security/2026/06/29/ai-may-be-good-at-finding-security-vulnerabilitie...
1•Bender•16m ago•0 comments

Show HN: YouTube to MP3 Converter – Free in the Browser

https://chromewebstore.google.com/detail/youtube-to-mp3-converter/kgfdacnkkopabjkldcngegljjnelgcgk
1•yazanbaker•17m ago•0 comments

Nissan says Oracle PeopleSoft break-in may have spilled payroll records, SSNs

https://www.theregister.com/security/2026/06/29/nissan-says-oracle-peoplesoft-break-in-may-have-s...
1•Bender•17m ago•0 comments

Multifold Speed Boost for Supercomputer Simulations of Molecules

https://www.simonsfoundation.org/2026/06/24/mathematicians-unleash-multifold-speed-boost-for-supe...
2•tzury•17m ago•1 comments

In a New Image, NASA Captures 16.5M Stars of the Cigar Galaxy

https://www.thisiscolossal.com/2026/06/messier-82-cigar-galaxy-webb-image/
1•surprisetalk•18m ago•0 comments

When crypto tries to behave like an annuity

https://mysafetrader.com/dashboard
1•dmsweetser•19m ago•0 comments

A native graphical shell for SSH

https://probablymarcus.com/blocks/2026/06/28/native-graphical-shell-for-SSH.html
2•mrcslws•21m ago•0 comments

Everything in Git? No Way

https://legoraft.com/posts/everything-git-no-way/
2•speckx•22m ago•0 comments

Edison Fears Hidden Perils of the X-Rays (1903)

https://web.archive.org/web/20071111054257/http://home.gwi.net/~dnb/read/edison/edison_xrays.htm
2•joebig•22m ago•0 comments

So You Want to Fix Your All Hands

https://randsinrepose.com/archives/so-you-want-to-fix-your-all-hands/
1•mooreds•22m ago•0 comments