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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!

Google Compute shut down my server for distributing malware

1•farzher•42s ago•0 comments

Show HN: Engrim – A universal, local-first SQLite memory engine for AI CLIs

https://github.com/timgordontg/engrim
1•timgordontg•2m ago•0 comments

TiVo to charge money for skipping commercials in your own recordings

https://cordcuttersnews.com/tivo-plans-to-end-free-automatic-commercial-skipping-in-november-test...
2•dmitrygr•10m ago•0 comments

Show HN: The Duck Has WiFi, a music video drawn with Python

https://www.youtube.com/watch?v=_h1KgS169iM
1•modinfo•13m ago•0 comments

HPE Gives Oracle Right to Buy 4.2M Shares for 1 Cent Each

https://www.forbes.com/sites/antoniopequenoiv/2026/09/03/hewlett-packard-enterprise-gives-oracle-...
1•gurjeet•13m ago•0 comments

I refused to train the AI that could replace me

https://restofworld.org/2026/ai-training-jobs-expert-replacement/
3•colinprince•13m ago•0 comments

The Instinct Thesis: Why Memory Is Becoming the Moat

https://twitter.com/ashwingop/status/2093026452929405356
1•yarapavan•14m ago•0 comments

Marginal Revolution University: Economics for Everyone,taught by econ professors

https://mru.org
1•gurjeet•17m ago•0 comments

I just don't care about your skill files

1•drunkpotato•18m ago•0 comments

From NAND to Tetris (book and course) [video]

https://www.youtube.com/watch?v=LqirVc5SlW0&list=PLrDd_kMiAuNmSb-CKWQqq9oBFN_KNMTaI
1•nomilk•18m ago•1 comments

Show HN: Server hardening playbook where every item is failure/fix/verify

https://github.com/Sanexxxx777/server-hardening-playbook
1•Aleksandr_NFA•20m ago•0 comments

A HN that is better than HN

https://hn.4mn.org/
3•HNSucksDick•22m ago•1 comments

Samsung Debuts zHBM Prototype, Stacking Memory Directly on AI Accelerators

https://www.thelec.net/news/articleView.html?idxno=12835
1•peter_d_sherman•24m ago•1 comments

He's Letting AI Agents Invest His Money. They Even Have Names

https://www.wsj.com/tech/ai/the-ai-shift-turning-everyday-investors-into-mini-quant-funds-ebe4d45f
2•thm•27m ago•0 comments

Show HN: GasMeUp – A gas app that factors in detour time and tank size

https://gasmeup.app/
1•Sharanxxxx•28m ago•0 comments

Show HN: GuidedReview – Review AI-generated code before you sign your name to it

https://github.com/nshntarora/guidedreview
1•nshntarora•28m ago•0 comments

I made legacy SOAP APIs usable by AI agents

https://github.com/bvenkata/legacy2mcp
1•balajijoe5•31m ago•0 comments

Show HN: Golden hour API and a 3D globe of the best light

https://golden.sendafun.com/
1•gpszys•33m ago•0 comments

Coop – Isolated VM Environments for Running Claude Code and Codex

https://github.com/trailofbits/coop
1•aggrrrh•33m ago•0 comments

Iran's Hormuz leverage wanes as US economic squeeze bites

https://www.reuters.com/business/energy/irans-hormuz-leverage-wanes-us-economic-squeeze-bites-202...
1•kaycebasques•33m ago•0 comments

Filepack

https://rodarmor.com/blog/filepack/
1•greyface-•40m ago•0 comments

'RAMageddon' hits consumer electronics as AI drains chip supply

https://www.ft.com/content/ea9a9dcc-b1df-49b0-b80c-f320161b9efa
4•sbulaev•44m ago•0 comments

Tell HN: Anthropic should make Claude the Author and me the Co-Author

2•xeonax•44m ago•1 comments

US Republicans revolt against Flock AI surveillance as backlash intensifies

https://www.ft.com/content/b207536e-6def-4080-878f-d0eba61d11e0
3•sbulaev•44m ago•0 comments

British Museum faces question over Peter Thiel's private Bayeux Tapestry viewing

https://www.londondaily.news/__sentry/balanced/british-museum-faces-questions-over-peter-thiels-p...
3•frm88•47m ago•1 comments

A makeover for college: No gym, no meal plan and two years of work

https://www.npr.org/2026/09/01/nx-s1-5935431/college-reinvented-vermont-work-experience
1•juanplusjuan•47m ago•0 comments

Indonesia's Anak Krakatau eruption halts flights, schools, fishing

https://www.reuters.com/business/environment/indonesias-jakarta-airport-suspends-flights-due-ash-...
1•wslh•51m ago•0 comments

Show HN: Cartoon Photography

https://mkornreich.me/projects/cartoonphotography/
1•enjoyyourlife•56m ago•0 comments

New Twitter Rebrands to Tweet.app After Court's Double-Edged Ruling

https://www.engadget.com/2251699/new-twitter-rebrands-to-tweet-app-after-court-double-edged-ruling/
2•Anon84•57m ago•0 comments

Show HN: Lantunnel – a P2P-first private mesh for reaching your LANs

https://github.com/lantunnel/lantunnel
4•buhuipao•1h ago•0 comments