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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!

Does the Crichton Estate Have a Case?

https://yapern.com/blog/does-the-crichton-estate-have-a-case/
1•15o9o•1m ago•0 comments

Cursor - An update on our recent security incident

https://cursor.com/blog/security-incident-update
1•dsr12•1m ago•0 comments

The Claude Delusion

https://www.netmeister.org/blog/claude-delusion.html
3•janvdberg•4m ago•0 comments

Let the Real Chaos Begin

https://straightlinelogic.com/2026/11/13/let-the-real-chaos-begin-by-robert-gore/
2•ytNumbers•5m ago•0 comments

A visual explanation of reinforcement learning

https://aatishb.com/myriad/how-brains-learn/
2•aatish•9m ago•0 comments

How to Handle Errors in Go

https://blog.jetbrains.com/go/2026/09/02/how-to-handle-errors-in-go/
2•mroche•9m ago•0 comments

Crx-gate – Audit Chrome extensions and predict CWS rejections in 2ms

https://github.com/jaw0r3k/crx-gate
1•jaw0r3k•10m ago•0 comments

Probabilistic Data Structures in Go

https://antonz.org/probabilistic-data-structures/
2•mfrw•10m ago•0 comments

What new PyPI packages import: LLM, httpx, pydantic v2

https://py-code.org/blog/new-pypi-packages-imports/
1•aidotguru•12m ago•0 comments

Engineering Fought Productivity Metrics. AI Ended the Fight

https://nerdstein.net/blog/measuring-developer-productivity/
1•RickJWagner•13m ago•0 comments

One adds and the other subtracts – founders on Ableton

https://roberthenke.com/interviews/ableton.html
1•felixbraun•13m ago•0 comments

Terminal text-editor for I know roughly what I'm looking for, just take me there

https://crates.io/crates/peek-editor
1•lalithaar•15m ago•0 comments

Dwight D. Eisenhower's farewell address

https://en.wikipedia.org/wiki/Dwight_D._Eisenhower%27s_farewell_address
2•embedding-shape•17m ago•1 comments

Advancing science and engineering with Antigravity's /teamwork

https://research.google/blog/advancing-science-engineering-with-antigravitys-teamwork-feature/
1•acossta•19m ago•0 comments

Xdg-ninja: Shell script to check $HOME for unwanted files and directories

https://github.com/b3nj5m1n/xdg-ninja
1•ankitg12•20m ago•1 comments

Guru: An Self Evolving AI framework for Android

https://github.com/GuruProduction/GURUbyUnusLumen
1•introducingGURU•22m ago•0 comments

Show HN: Zigzag, a native Mac browser for people leaving Arc

https://github.com/ZigaoWang/zigzag
1•ZigaoWang•23m ago•0 comments

Building Strong Safety Evaluations

https://www.anthropic.com/research/building-strong-safety-evaluations
1•tosh•25m ago•0 comments

Riding the Rails with America's Last Train-Hoppers

https://www.currentaffairs.org/news/trainhoppers
1•bookofjoe•25m ago•0 comments

Les Espaces D'Abraxas

https://en.wikipedia.org/wiki/Les_Espaces_d%27Abraxas
1•tosh•25m ago•0 comments

FPGA Chronicles

https://hackaday.com/series_of_posts/fpga-chronicles/
1•AlexeyBrin•27m ago•0 comments

Show HN: Sauron – Error tracking and product analytics in one self-hosted stack

https://sauron.splimter.com/
1•splimter•27m ago•0 comments

Show HN: What bootstrapped startups get from credit programs

https://github.com/aidenixai/bootstrapped-credits
1•fantomkoenig•27m ago•0 comments

Those Secret Fonts from the ISA-16 PS/2 Models (Again)

https://int10h.org/blog/2025/07/secret-fonts-isa16-ps2-again/
2•tosh•31m ago•0 comments

Indian Air Force Commander leaked war plans to Pakistan honeytrap spy for nudes

https://timesofindia.indiatimes.com/india/iaf-honeytrap-case-wing-commander-leaked-war-plans-to-p...
2•vrganj•33m ago•0 comments

Show HN: Shotoku – Local-first action governance and budget caps for AI agents

https://www.shotoku.dev/
1•IssaPrvj•37m ago•0 comments

Show HN: OneMax Agent – Mac dictation that turns voice notes into tasks

https://onemaxagent.com/en
1•zekaiwang2014•44m ago•0 comments

Tesla Cybercab orders open at $29,990 and $299/mo, only in Robotaxi zones

https://electrek.co/2026/11/13/tesla-cybercab-personal-use-orders-299-subscription-geofence/
2•stemos•44m ago•0 comments

Show HN: Cyberviber – a $15 touch screen to show which Claude session needs you

https://cyberviber.de/
3•d1351r43•46m ago•0 comments

Solving the Fox Game

https://blog.sesse.net/blog/tech/2026-11-13-19-51_solving_the_fox_game.html
2•frostbyte7•48m ago•0 comments