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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!

Syrinx: A censorship-resistant communications platform

https://var0.xyz/posts/introducing-syrinx.html
1•ibobev•1m ago•0 comments

Show HN: Fast agentic video editing in the browser (Tella)

https://www.tella.com
1•9ranty•1m ago•0 comments

16colo.rs – ANSI/ASCII art archive

https://16colo.rs/
1•memalign•1m ago•0 comments

Nim Version 2.4.0 Released

https://nim-lang.org/blog/2026/10/28/nim-240.html
1•ibobev•2m ago•0 comments

Double Daylight Saving Time

https://doubledst.org/
1•3wolf•3m ago•0 comments

The Web Can't Afford a JavaScript Runtime Monoculture

https://redmonk.com/kholterhoff/2026/10/27/js-runtime-monoculture/
2•ibobev•3m ago•0 comments

Bloomberg, trading firms to pay Trump for faster Truth Social access

https://www.reuters.com/business/finance/bloomberg-two-trading-firms-agree-pay-trumps-truth-socia...
1•geox•4m ago•0 comments

Show HN: Recto – A visual canvas for coding agents

https://recto.design
2•maroofkhan2007•5m ago•0 comments

Stopping Remote Code Execution with Sandboxes

https://cosmonic.com/blog/stopping-remote-code-execution-with-a-sandbox/
1•hectaman•5m ago•1 comments

Built to bend: Postgres's inventor and a steward on what AI needs

https://www.theregister.com/databases/2026/10/29/partner-content-built-to-bend-postgress-inventor...
1•DougN7•6m ago•0 comments

Show HN: Anna – a voice assistant that reports your machine's load, RAM and disk

https://github.com/yankelperelman/anna-dev
1•YankelPerelman•7m ago•0 comments

HelloWorld Enterprise

https://nreff.github.io/hello-world-enterprise/
1•hyperplanecube•10m ago•0 comments

Accused Impostor in Private Tracker Lawsuit Faces Contempt for Hiding Passport

https://torrentfreak.com/accused-impostor-in-private-tracker-lawsuit-faces-contempt-for-withholdi...
1•xbmcuser•10m ago•1 comments

Disambiguating the "guilty look": Salient prompts to a familiar dog behaviour [pdf]

https://barnard.edu/sites/default/files/inline-files/Disambiguating%20the%20guilty%20look.pdf
3•cf100clunk•10m ago•0 comments

A GitHub repo that prints your profile picture when you star it

https://github.com/aschmelyun/print-my-profile-pic
2•chrisdemarco•11m ago•0 comments

Autonomous Airships Keep Tabs on Energy Infrastructure

https://spectrum.ieee.org/infrastructure-inspection-airship-hylight
1•simonebrunozzi•12m ago•1 comments

A leveraged-loan bot on Base with a per-block guardian that knows when to stop

https://blakelapierre.substack.com/p/my-ai-agent-built-a-crypto-loan-bot
1•agentofone•12m ago•0 comments

CPU-only voice clone that transcribes each sentence and retakes misreads

https://blakelapierre.substack.com/p/i-turned-my-newsletter-into-a-podcast
3•agentofone•13m ago•0 comments

Show HN: Panta – Open Swiss job market data

https://withpanta.com/
3•GustavHartz•13m ago•1 comments

Show HN: EarnDraft – Generate Ebooks with AI

https://www.earndraft.com
1•holoiii•14m ago•0 comments

Show HN: Claude Scrub - redact secrets from Claude Code history on disk

https://github.com/overflowy/claude-scrub
1•overflowy•15m ago•0 comments

Key

1•ANTHONY399•15m ago•0 comments

Coding Agents, Starter Kits and Pgledger

https://www.pgrs.net/2026/10/29/coding-agents-starter-kits-and-pgledger/
3•pgr0ss•16m ago•0 comments

An Ancient Virus Explains Why the Human Brain Is Special

https://www.404media.co/an-ancient-virus-explains-why-the-human-brain-is-special/
1•saikatsg•16m ago•0 comments

Wikipedia:Administrators noticeboard- Nearly 1000 outstanding COI edit requests

https://en.wikipedia.org/wiki/Wikipedia:Administrators%27_noticeboard
1•MetalBreaksAndB•17m ago•0 comments

Show HN: Personal Context Manager

https://github.com/rsbh/personal-context-manager
2•rishabh09•18m ago•0 comments

Brazil will require facial recognition to keep a mobile phone line by 2029

https://www.gov.br/anatel/pt-br/assuntos/noticias/anatel-aprova-validacao-biometrica-obrigatoria-...
2•dvaplima•18m ago•0 comments

Capital Wants a Monopoly

https://larrysalibra.com/capital-wants-a-monopoly/
2•larrysalibra•18m ago•0 comments

Building Java Me Apps with Modern Tooling

https://voxelmanip.se/2026/10/24/building-java-me-apps-with-modern-tooling/
1•birdculture•18m ago•0 comments

Metabolic Heterogeneity of Obesity

https://www.nature.com/articles/s41591-026-04718-7
1•brandonb•19m ago•0 comments