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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!

Adversarial Creation and Detection of AI-Generated Social Bot Content

https://arxiv.org/abs/2606.07219
1•Anon84•28s ago•0 comments

Vantage – open-source CS2 player intelligence from Steam, FACEIT and Leetify

https://github.com/k6w/vantage
1•regele•1m ago•0 comments

VictoriaMetrics: AI Policy

https://docs.victoriametrics.com/victoriametrics/contributing/index.html
1•tosh•5m ago•0 comments

Show HN: FrontStep v0.5.2

https://github.com/GiovanniCst/frontstep
2•J_cst•7m ago•0 comments

Does Alpha School Work for Regular Kids?

https://danmeyer.substack.com/p/does-alpha-school-work-for-regular
1•MrBuddyCasino•7m ago•0 comments

GLM-5.3 – The Official Desktop Auditor for Z.AI's Cyber-Engine

https://github.com/ZAI-GLM-5-3/glm-5.3
1•nioj•8m ago•0 comments

Babel: A skyscraper where every Wikipedia edit becomes a brick

https://babel.reppie.org/
1•meetpateltech•10m ago•0 comments

AI Software Development – What Does the Data Say?

https://codemanship.wordpress.com/2026/08/12/ai-software-development-what-does-the-data-say/
1•jesterpm•11m ago•0 comments

PriEco: Customize Your Results Ranking

https://prieco.net/blog/goggles
1•JojoYou•12m ago•0 comments

Traffic Modeling with Sumo: A Tutorial

https://arxiv.org/abs/2304.05982
1•teleforce•13m ago•0 comments

DeepSeek V4 Flash at 278 tok/s, full precision, no quantization

https://runinfra.ai/inference-api/deepseek-v4-flash
1•OsamaJaber•14m ago•0 comments

Could a computer scientist build a brain?

https://stankerstjens.github.io/could-a-computer-scientist-build-a-brain/
1•ogundipeore•14m ago•0 comments

The best way to sell a concentrated position at SpaceX

https://ofdollarsanddata.com/the-best-way-to-sell-a-concentrated-position/
1•rwmj•15m ago•0 comments

The Gestalt Principles

https://ixdf.org/literature/topics/gestalt-principles
1•breppp•16m ago•0 comments

S.A.T.U.R.D.A.Y: serf-hosted speech to text AI assistant

https://github.com/GRVYDEV/S.A.T.U.R.D.A.Y
1•soupspaces•16m ago•0 comments

Show HN: I built a spatial node canvas to fix LLM context drift

https://treequence.ai
2•jebuehler55•16m ago•0 comments

Show HN: Feature-packed 6MB Rust+Tauri free bookmarking app

2•freakynit•19m ago•0 comments

1Password's new benchmark teaches AI agents how not to get scammed

https://1password.github.io/SCAM/#
3•mrkd•20m ago•0 comments

Great music selection without overthinking

3•cr34t1ve•20m ago•4 comments

My open source project's donations no longer go through my bank account

https://spliit.app/blog/spliit-funding-is-now-on-open-collective
3•scastiel•22m ago•0 comments

Brazilian election filter in X For You timeline

https://github.com/xai-org/x-algorithm/blob/main/home-mixer/filters/brazil_2026_election_filter.rs
12•LorenDB•22m ago•4 comments

AI assistance is not authorship

https://twitter.com/Seltaa_/status/2088353576259314024
2•bilsbie•23m ago•0 comments

Simu5G: Simulator for 5G New Radio Networks

https://simu5g.org/
2•teleforce•24m ago•0 comments

388 years ago, Galileo worked out why human giants can't exist

https://www.scientificamerican.com/article/388-years-ago-galileo-worked-out-why-human-giants-cant...
8•beardyw•25m ago•2 comments

NASA processor is performing 500x faster than rad-hardened chips currently used

https://spacedaily.com/t-nasa-hpsc-processor-500-times-faster-spaceflight-ai/
2•rbanffy•25m ago•0 comments

Do You Really Know Python? Quant Dev Mock Interview [video]

https://www.youtube.com/watch?v=bE0K8mn18-8
2•adletbalzhanov•27m ago•0 comments

CIE 1931 XYZ colour space (2024)

https://observablehq.com/@christophe-yamahata/cie-1931-xy-chromaticity-diagram
2•tingletech•28m ago•0 comments

Farside has been shut down

https://farside.link
2•DavideNL•29m ago•0 comments

Brain turns listening inward during REM sleep, EEG recordings suggest

https://medicalxpress.com/news/2026-07-brain-rem-eeg.html
9•gmays•31m ago•0 comments

GitHub's push-farm spam hit 64% again – 106h live investigation

https://github-pulse.surge.sh/report.html
3•ghspamwatch•31m ago•0 comments