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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!

UK's Extend Robotics Secures US$3.3M to Sell Factory Work Instead of Machines

https://www.saasrise.com/deals/uks-extend-robotics-secures-us33m-26m-to-sell-factory-work-instead...
1•monkeydust•2m ago•0 comments

OntoPrune – Pruning 85% LLM context tokens and 6.7x TTFT on CPU

https://github.com/vigmarcarlo/OntoPrune
1•vigmarcarlo•3m ago•0 comments

Own Personal Jarvis

https://github.com/AnaaySampat/jarvis
1•anaaysampat•4m ago•4 comments

An MMO you can play with curl

https://cooldownmmo.com/
1•lorderetik•5m ago•0 comments

OpenDLSS-NR get a ThreeJS port

https://github.com/bhouston/three-dlss-nr/
2•bhouston•6m ago•0 comments

You Need to Stop Babysitting Your Agent [video]

https://www.youtube.com/watch?v=RQEwXaawOso
3•sam_3•6m ago•0 comments

An application in Lisp you grow by talking to it

https://ghuntley.com/lisp/
2•ghuntley•8m ago•0 comments

The Art of not writing all the code

https://ljtn.github.io/epiq/blog/the-art-of-not-writing-all-the-code.html
2•ionetan•11m ago•0 comments

Fitts's law: why the menu bar is at the top

https://milos.fyi/blog/fitts-law-why-the-menu-bar-is-at-the-top
2•mmilanovic4•12m ago•0 comments

My New Course at UT Austin: AI Alignment Theory

https://scottaaronson.blog/?p=10125
2•nsoonhui•13m ago•0 comments

Self-host your own AI text detector on CPU to filter out slop

https://github.com/pablocaeg/sloptotal
3•sloptotal•13m ago•0 comments

Show HN: A keyboard-first sudoku with technique lessons and a daily leaderboard

https://kodiaksudoku.com
3•razcodes•13m ago•0 comments

Campfire ported to JavaScript

https://twitter.com/dhh/status/2107077808182976817
2•tosh•14m ago•0 comments

SI Units for Astronauts

https://leontrolski.github.io/si.html
1•leontrolski•18m ago•0 comments

Breeding programme brings heaviest insect back from the brink

https://www.theguardian.com/world/2026/oct/05/new-zealand-worlds-heaviest-insect-breeding-programme
1•tosh•18m ago•0 comments

Can We Make React Faster Using the React Compiler?

https://jimmyhmiller.com/what-does-the-react-compiler-even-do
1•surprisetalk•19m ago•0 comments

Do people prefer stories written by AI?

https://www.cambridge.org/dk/universitypress/about-us/news-and-blogs/do-people-prefer-stories-wri...
1•bryanrasmussen•19m ago•0 comments

Clef (and Clef Flash) from Cloudflare

https://ollama.com/library/clef
1•DerDerDaIst•20m ago•0 comments

Show HN: Lazychat – A lazygit-style TUI for running Claude Code and Codex

https://github.com/Perpeer/lazychat
2•perpeer•22m ago•0 comments

NFL standings if every game were replayed 4k times to adjust for luck

https://luckadjusted.com/nfl
1•cppcrunch•24m ago•0 comments

PasRISCV – A RISC-V RV64GCV/RVA23 Emulator Written in Object Pascal

https://github.com/BeRo1985/pasriscv
1•peter_d_sherman•24m ago•0 comments

Reliability Lessons from SQLite – Richard Hipp – SSW 2026 [video]

https://www.youtube.com/watch?v=V_qzqY1bb7I
3•_kb•25m ago•0 comments

Diagnosing and Mitigating Tool-Call Repetition in MiMo-v2.6

https://mimo.xiaomi.com/blog/mimo-v2-6-tool-call-repetition
1•truth_seeker•30m ago•0 comments

A Right to the Untold Narratives

https://nimishg.substack.com/p/a-right-to-the-untold-narratives
1•i_dont_know_•30m ago•1 comments

Show HN: Jamming with Jev and Claude on TidalCycles

https://jdsemrau.substack.com/p/jamming-with-jev-and-claude-on-tidalcycles
1•ph4rsikal•30m ago•0 comments

OpenAI's Altman: Ascribing religion to models a "safety issue"

https://www.axios.com/2026/10/03/openai-anthropic-altman-amodei-religious-force-models
2•ilamont•31m ago•0 comments

Diffuse Field: Calculate, Characterize, Calibrate

https://headphones.com/blogs/features/diffuse-field
1•davikr•32m ago•0 comments

Stage Zero: Pre-positioning

https://ikerantxustegi.com/research/stage-zero-prepositioning/
1•ikerantxustegi•32m ago•0 comments

Libera.chat Is an Agenda-Peddling Platform Run by Agenda-Peddling Individuals

https://techrights.org/n/2026/10/05/libera_chat_is_an_Agenda_Peddling_Platform_Run_by_Agenda_Pedd...
2•amcclure•36m ago•1 comments

Hindsight – An open-source memory system for AI agents

https://github.com/vectorize-io/hindsight
2•Moon_Y•37m ago•0 comments