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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!

Crosspoint Reader – A FOSS firmware for Xteink ereaders

https://crosspointreader.com/
2•devonnull•56s ago•0 comments

Tell HN: I don't trust Bigco AI agents with AI research IP

1•botencat•1m ago•0 comments

Evil tip: avoid "easy" things (2016)

https://yosefk.com/blog/evil-tip-avoid-easy-things.html
2•downbad_•10m ago•0 comments

New Microsoft 365 pricing live, some products up by 42% due to AI

https://www.windowslatest.com/2026/07/05/microsoft-365-just-got-a-price-hike-over-continuous-inno...
4•ninko•12m ago•2 comments

AKM-CLR – pre-inference governance for vLLM-style LLM serving

https://github.com/irenee28/akm-clr-governance-layer
2•akili2805•12m ago•0 comments

Bench Press: Leaking Text Nodes with CSS (2024)

https://blog.pspaul.de/posts/bench-press-leaking-text-nodes-with-css/
2•gslin•13m ago•0 comments

DNSGlobe – Rust TUI to watch DNS propagate around the world

https://github.com/514-labs/dnsglobe
3•Callicles•14m ago•0 comments

I scored every FOMC statement since 1994 and put it behind an API

https://financialdatapi.com
2•Neith12•15m ago•0 comments

IronToll: Global Government-Impersonation PhaaS

https://phisheye.com/blog/irontoll-iron-man-phaas-campaign
2•naveenda•16m ago•0 comments

FIFA makes U-turn following call from Trump

https://www.reuters.com/sports/soccer/us-striker-balogun-available-belgium-clash-despite-red-card...
6•sxzygz•16m ago•1 comments

Ask HN: What do you do with the user guide of the universe?

2•KenographerPrim•19m ago•0 comments

Here here, there is no there, there

https://silvestro2026.substack.com/p/here-here
3•silvestromedia•21m ago•0 comments

Building blocks leave no crumbs

https://www.nvegater.com/blog/building-blocks
2•nvegater•22m ago•0 comments

Composite Video on the NES: Why's it so wobbly?

https://nicole.express/2026/phase-altering-by-line.html
2•zdw•25m ago•0 comments

One Piece as Modern Scripture

https://pilgrimsage.substack.com/p/the-grand-line
2•momentmaker•25m ago•0 comments

The Tech Sentiments Pulse: What Today's Tech and Crypto Headlines Are Signaling

https://medium.com/@thesuperrepemail/the-tech-sentiments-pulse-what-todays-tech-crypto-headlines-...
2•mssblogs•25m ago•0 comments

Prism: An Impure Functional Language With Typed Effects

https://www.stephendiehl.com/posts/prism/
2•azkalam•26m ago•0 comments

CoCom regulations and GPS receivers for balloons and cubesats

https://space.stackexchange.com/questions/14687/current-situation-with-cocom-regulations-and-gps-...
6•vinnyglennon•31m ago•0 comments

Had an idea for a Rust editor with simple Vim mode for learning

https://github.com/electronicsleep/rust-vim
2•ElectronicSleep•33m ago•1 comments

Vercel Container Registry

https://vercel.com/changelog/introducing-vcr-vercel-container-registry
2•lukesheard•34m ago•0 comments

Show HN: Homegames. An open-source game platform I've been making for 8 years

https://homegames.io
17•homegamesjoseph•37m ago•2 comments

Pacerift – I built a motorcycle telemetry app using only phone sensors

https://play.google.com/store/apps/details?id=com.xspl.pacerift&hl=en_US
3•sauravXzent•39m ago•0 comments

I'm an obsessed hobby cheesemaker. [AMA]

https://old.reddit.com/r/AskMeAnythingIAnswer/comments/1uo6cqc/im_an_obsessed_hobby_cheesemaker_ama/
3•consumer451•39m ago•0 comments

Bird nests of fibre-optic cables show war's impact on Ukraine

https://www.reuters.com/business/aerospace-defense/bird-nests-fibre-optic-cables-show-wars-impact...
4•joebig•39m ago•0 comments

LaCie drives just contain regular Seagate drives inside

https://twitter.com/eftegarie/status/2073881763055641034
3•amin•40m ago•2 comments

Live Image/Video Translation

https://blog.davidv.dev/posts/mobile-translator-video/
3•wonger_•43m ago•0 comments

Time-based background colour transitions with Temporal and CSS color-mix

https://localghost.dev/blog/time-based-background-colour-transitions-with-temporal-and-css-color-...
7•gslin•45m ago•0 comments

WhaleCap: Keep your DeepSeek API credits from running out on day one

https://www.npmjs.com/package/whalecap
3•wayepoint•45m ago•0 comments

RPB – Raylib Project Builder

https://raysan5.itch.io/raylib-project-builder
3•Erenay09•47m ago•0 comments

RPC – Raylib Project Creator

https://raysan5.itch.io/raylib-project-creator
3•Erenay09•47m ago•0 comments