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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!

The One That Says IT All

https://liljrxsoverign.substack.com/
1•liljr20•3m ago•0 comments

Bearded Vulture

https://en.wikipedia.org/wiki/Bearded_vulture
1•petethomas•6m ago•0 comments

Show HN: Open source React Native debugging studio

https://www.nativescope.dev
2•guigg•6m ago•2 comments

Why bowling alleys are replacing pins with strings [video]

https://www.youtube.com/watch?v=vhjp--rA9ho
1•hydrox24•7m ago•0 comments

Flint: A Visualization Language for the AI Era

https://microsoft.github.io/flint-chart/
1•vinhnx•7m ago•0 comments

Firefox Local Mode for Web Developers

https://firefox-source-docs.mozilla.org/devtools-user/local_mode/index.html
2•csmantle•12m ago•0 comments

Leopold Aschenbrenner built a $45B AI hedge fund – and lost most of it in days

https://www.cnbc.com/2026/07/31/leopold-aschenbrenner-situational-awareness-fund-fire-sale.html
1•gilfoyle_7•12m ago•0 comments

Abora OS – A NixOS based distro

https://www.aboraos.org/
1•gallon-poem•19m ago•0 comments

I Work at Micro-Center (1985) [video]

https://www.youtube.com/watch?v=0ywbd76wVtk
1•doublepg23•21m ago•1 comments

Snapchat joins other popular platforms in fight against 'AI slop'

https://www.bbc.com/news/articles/c77g6dm5pr8o
1•vinni2•36m ago•0 comments

How Did America Get Its Name? (2016)

https://blogs.loc.gov/loc/2016/07/how-did-america-get-its-name/
1•thunderbong•43m ago•0 comments

Show HN: Random OS I made using C

https://github.com/NoTheIdiot/WindogeOS
2•notheidiot•50m ago•1 comments

Show HN: I built a Python obfuscator that keeps production traces debuggable

https://github.com/zhurong2020/pyobfus
1•znhskzj•51m ago•1 comments

Upgraded melly, our agent on sleek

1•silisleek•51m ago•0 comments

Google is actively hiring someone to save the world from AGI/ASI

https://www.google.com/about/careers/applications/jobs/results/95635593379095238
5•arm32•56m ago•1 comments

The Math Superstar Who's Terrified of AI–and Just Took a Job at OpenAI

https://www.wsj.com/tech/ai/openai-jacob-tsimerman-fields-medal-ai-safety-391d0f79
3•berkeleyjunk•56m ago•0 comments

Protecting the Nation's Communications Systems from Cybersecurity Threats

https://www.federalregister.gov/documents/2026/07/31/2026-15601/modernization-of-the-nations-aler...
1•Jimmc414•57m ago•0 comments

De mora luminis: Roemer's discovery 350 years later

https://arxiv.org/abs/2607.28512
1•Jimmc414•57m ago•0 comments

What's in a Name: A Guide to the Many Flavours of TeX

https://www.overleaf.com/learn/latex/Articles/What%27s_in_a_Name%3A_A_Guide_to_the_Many_Flavours_...
1•smitty1e•58m ago•0 comments

Accepting a Messy Git History

https://beza1e1.tuxen.de/git_two_users.html
1•matheusmoreira•58m ago•0 comments

SF-schema-snapshot – dump a Salesforce org's schema to SQLite

https://github.com/MogwaiNerfHerder/sf-schema-snapshot
1•DavidRussellCG•1h ago•0 comments

Show HN: Sanitizer – Strip sensitive data from documents locally before an LLM

https://provexar.ai/sanitizer
1•MVKozyrev•1h ago•0 comments

What's Happening with IT Hiring?

1•hannibalevit•1h ago•1 comments

Cdbx – an AI coding IDE where you can bring your own API key and own the code

https://cdbx.ai/
1•chbutler•1h ago•0 comments

Show HN: WhisperKeys - Offline macOS dictation, key-by-key

https://github.com/j-sofia/WhisperKeys
1•j-sofia•1h ago•1 comments

A Week in Matrix

https://piegames.de/dumps/a-week-in-matrix/
1•Kesseki•1h ago•0 comments

Tell HN: System76 has critical firmware issues unresolved for over 3 years

2•jaime-ez•1h ago•0 comments

Urldn – A URL shortener with analytics and an AI data analyst

https://waitlist.urldn.com/
2•assmira•1h ago•0 comments

Overactive Neurons Cause Excessive Sweating

https://www.the-scientist.com/overactive-neurons-cause-excessive-sweating-74787
2•gmays•1h ago•0 comments

Yann LeCun on What Comes After LLMs [video]

https://www.youtube.com/watch?v=ngBraLDqzdI
2•caminante•1h ago•0 comments