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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!

Would SpaceXAI Acquire Vercel?

https://twitter.com/jessethanley/status/2093298774949146796
1•eyehurtsme•45s ago•0 comments

Pdfboss – fast rust-based pdf library, with Python bindings

https://pdfboss.dev
1•ransomware•2m ago•0 comments

TwitterWebViewer has been permanently discontinued

4•avidruntime•2m ago•0 comments

Claude Max for OSS developer plan of Matz (Ruby) is running out

https://twitter.com/yukihiro_matz/status/2093347403101589618
1•tosh•3m ago•0 comments

Archil Persistent Sandboxes

https://archil.com/post/introducing-persistent-sandboxes
1•dhorthy•4m ago•0 comments

Ask HN: How do we get our US Cellular (T-Mobile?) phone number back? (complex)

1•CoryMO•5m ago•0 comments

Reflexio: Reduce task failure by 36% while saving token by more than 50%

https://www.reflexio.ai
1•yilu331•5m ago•1 comments

Dimethylmercury Poison MIT

https://whdh.com/news/first-on-7-patient-brought-to-mgh-for-exposure-to-chemical-substance-prompt...
2•dukefishron•8m ago•0 comments

What Hanging from a Bar for 30 Seconds Can Do for Your Body

https://time.com/article/2026/08/25/hanging-from-bar-benefits/
2•mooreds•8m ago•0 comments

Build with Muse Image: generate, edit, and compose images on Meta Model API

https://developer.meta.com/ai/resources/blog/build-with-muse-Image/
2•mfiguiere•8m ago•0 comments

Show HN: SplatIt. Self-hosted game servers for Splatoon on Wii U

https://github.com/oxixes/splatit
1•oxixes•8m ago•0 comments

Spotify Backstage Meet LiteLLM for Corporate AI Governance

https://github.com/acarmisc/backstage-plugin-litellm-govai
1•acarmisc•10m ago•0 comments

Sonic Pi

https://sonic-pi.net/
1•Bluestein•10m ago•0 comments

Claude: Free Plan for Scientists

https://claude.com/programs/team-plan-for-scientists
1•tosh•10m ago•0 comments

Accel-SIM 2.0: Validated GPU Simulation with Full Hopper Support

https://github.com/accel-sim/accel-sim-framework
1•matt_d•11m ago•0 comments

France opens door to fighter jet cooperation with Sweden

https://www.politico.eu/article/france-doesnt-rule-out-fighter-jet-cooperation-with-sweden-dassau...
1•madspindel•14m ago•0 comments

A Little Less Software Clutter

https://aradar.top/posts/targz-manager/
2•aradar46•18m ago•0 comments

Vertical Tornado/Waterspout [video]

https://www.youtube.com/watch?v=r9IH8ohS-X4
2•Eridanus2•20m ago•0 comments

CSVLint helps you to check that your CSV file is readable

https://csvlint.io/
2•amai•20m ago•0 comments

Ask HN: AI writes better code than me. How to keep my identity?

4•jdw64•21m ago•2 comments

Show HN: Blast – Open-source sandbox-as-a-service

https://github.com/stanford-mast/blast
2•calebhwin•22m ago•0 comments

Researchers Put Spinach into Bread and Saw the Body's Insulin Response Change

https://www.sciencealert.com/researchers-put-spinach-directly-into-bread-and-saw-the-bodys-insuli...
2•downbad_•22m ago•0 comments

U.K. Supreme Court Opens Door for Spyware Victims to Sue Foreign States

https://www.lawfaremedia.org/article/u.k.-supreme-court-opens-door-for-spyware-victims-to-sue-for...
6•hn_acker•23m ago•0 comments

WAL and S3: Lakebase storage for the era of agents

https://neon.com/blog/wal-s3-lakebase-storage-for-the-era-of-agents
2•kunalsin9h•23m ago•0 comments

PJ Harvey Tuesday #5

https://therumpus.net/2013/11/26/pj-harvey-tuesday-5-this-mess-were-in/
2•jruohonen•24m ago•0 comments

Artwork-TUI – spreadsheet-driven generative art tool in the terminal

https://github.com/andri-berger/artwork-tui
2•barney100•24m ago•0 comments

Brain Doesn't Think in Words

https://news.mit.edu/2026/separating-logic-and-language-0708
3•myelinscience•25m ago•1 comments

Firekeep

https://github.com/kapella-hub/FirekeepHQ
2•kapella•26m ago•0 comments

Origami Projector: a Glitch-like app for site editing

https://jan.miksovsky.com/posts/2026/08-28-origami-projector.html
2•Tomte•27m ago•0 comments

Disturbed loners probably pose an exponentially increasing threat to society

https://stefankelly.substack.com/p/disturbed-loners-probably-pose-an
3•pressentiment•27m ago•1 comments