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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!

I extended the recent 67.25007% zeta bound to 67.28470% in Lean

https://github.com/teal-sea/zeta-lab
1•thomaslince•40s ago•0 comments

Flock Exec Alleges Opponents Would Let All Children Die Before Supporting Flock

https://ipvm.com/reports/flock-all-of-them
1•jhonovich•3m ago•0 comments

When Rust Gets Ugly

https://corrode.dev/blog/ugly/
2•type0•5m ago•0 comments

Twitter – The Square Is Back

https://twitter.now/
2•absqueued•8m ago•0 comments

Sunshine

https://www.guidavid.com/writing/sunshine
2•gdss•11m ago•0 comments

Show HN: Tally – Track campaign donors, promises, and voting records

https://tally-2026.github.io/
2•Somnora•11m ago•0 comments

Moonshot AI in Talks with Microsoft, Amazon, Google over K3 Revenue Sharing

https://finance.yahoo.com/technology/ai/articles/exclusive-chinas-moonshot-talks-microsoft-075340...
2•jnord•11m ago•0 comments

Afterglow: Run classic After Dark screen savers on modern macOS

https://morphing.cloud/afterglow/
1•NaOH•12m ago•0 comments

Protein Secreted by Immune Cells May Help Drive Brain Aging

https://news.weill.cornell.edu/news/2026/08/protein-secreted-by-immune-cells-may-help-drive-brain...
2•gmays•15m ago•0 comments

Jet engine safety issue impacting ~750 commercial aircraft

https://avioradar.net/en/faa-and-easa-order-compressor-blade-replacements-on-v2500-engines/
2•r2sk5t•16m ago•1 comments

Debug a quantum computer (pt. 1)

https://medium.com/@jkim_tran/debug-a-quantum-computer-pt-1-841ff60992d3
1•jennifer-trin•19m ago•0 comments

Student Rewards on AWS Builder Center

https://builder.aws.com
1•Hussain04•19m ago•0 comments

Lake Mead water level 3D data visualizer

https://lakemead.nevadahiking.org/
1•SouthWestAtlas•20m ago•1 comments

Intelligence is becoming a commodity the way horsepower did

https://pilgrima.ge/p/the-verb-of-the-hollow
2•momentmaker•20m ago•0 comments

Influence Doesn't Come with the Promotion

https://jennywanger.com/articles/influence-doesnt-come-with-the-promotion/
2•mooreds•26m ago•0 comments

Debian weighs eight options in vote on LLM usage

https://lwn.net/Articles/1087134/
1•pykello•28m ago•0 comments

Show HN: WhisperBar Trying to Fix Both Reading and Writing in the AI Age

https://whisperbar.app
2•ne01•28m ago•0 comments

Taalas API Anyone?

2•revanthmatha•31m ago•1 comments

Mechanical Turk shutting down September 30

https://www.mturk.com/
26•tmp10423288442•35m ago•5 comments

Tailmix connects one host to multiple Tailscale tailnets at the same time

https://github.com/maisem/tailmix
3•linsomniac•36m ago•0 comments

AI for Lawyers in Argetina

https://ninolegal.com/
1•BrodaNoel•37m ago•1 comments

People are getting quieter and scientists are concerned [video]

https://www.youtube.com/watch?v=AeJ61w7be2A
2•gurjeet•40m ago•0 comments

Show HN: YC Hack Winner – RepoWorld

https://github.com/michaelaz774/RepoWorld
1•michael774•40m ago•0 comments

Zohran and the Short Link

https://iamwillwang.com/notes/zohran-and-the-short-link/
21•wxw•40m ago•4 comments

Encoding Myself into the System

3•nharziro•45m ago•0 comments

Radiation vest tested during Artemis I cuts astronauts exposure in solar storms

https://apnews.com/article/nasa-artemis-moon-radiation-astronauts-13e453c3e0502c0b0b3786b7fbc1a5cd
1•gmays•47m ago•0 comments

Robin Dunbar

https://en.wikipedia.org/wiki/Robin_Dunbar
1•gurjeet•47m ago•0 comments

Show HN: Herdr plugin to annotate anything in the terminal

https://github.com/plannotator/herdr-annotate
1•ramoz•53m ago•0 comments

Chairman Hawley Investigates AI-Powered Flock Cameras Amidst Privacy Concerns

https://www.hawley.senate.gov/chairman-hawley-investigates-ai-powered-flock-cameras-amidst-privac...
4•thaumaturgy•57m ago•1 comments

Market All the Apps

https://shipacademy.com/
1•KenPainter•59m ago•1 comments