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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 Need Ur Help

https://www.surgeos.app/
1•yernurpp•57s ago•1 comments

LG uses MS Store auto installs to show McAfee ads when connecting a new monitor

https://www.tomshardware.com/software/windows/companies-are-now-using-automatic-windows-installer...
1•josephcsible•1m ago•0 comments

Australia dock workers call for 28-hour week in AI talks

https://www.bbc.com/news/articles/cd95wendvdeo
1•aussieguy1234•5m ago•0 comments

Obesity rates in the U.S. climbed to about 40% of adults, 20% of youth in 2023

https://newsroom.heart.org/news/obesity-rates-in-the-u-s-climbed-to-about-40-of-adults-and-20-of-...
1•littlexsparkee•7m ago•0 comments

The Death of Secular Stagnation

https://www.ft.com/content/b1d634f8-1fb3-4bd2-8842-18ffbf527128
1•latentframe•11m ago•1 comments

Can any one leave a phrase that make you identify something is written by AI

1•MildyNora•12m ago•0 comments

Readme2demo – runs your README in a sandbox, publishes only what re-runs

https://github.com/alphacrack/readme2demo
1•alphacrack•14m ago•0 comments

Abnormal Response to Anthropic Lawsuit

https://abnormal.ai/blog/abnormal-response-to-anthropic-lawsuit
1•tmp10423288442•17m ago•0 comments

GPT-5.6 Sol, along with Terra and Luna, will launch publicly this Thursday

https://twitter.com/OpenAI/status/2074704958419792299
7•jfrbfbreudh•18m ago•0 comments

Liberalism or Communism? With Adam Tooze [video]

https://www.youtube.com/watch?v=zFeZ8VF7Hlw
1•verdverm•21m ago•0 comments

Show HN: SkelForm – 2D skeletal animator for games

https://skelform.org/
1•Retropaint•21m ago•0 comments

Microsoft adds another year to Windows 10 extended update program

https://arstechnica.com/gadgets/2026/06/microsoft-adds-another-year-to-windows-10-extended-update...
2•vidyesh•21m ago•0 comments

Praying Mantis

https://www.treehugger.com/most-absurd-looking-mantis-species-4868768
1•andsoitis•22m ago•0 comments

How well does RL scale?

https://www.tobyord.com/writing/how-well-does-rl-scale
2•therobots927•27m ago•0 comments

Safari sidebar silently loads all your bookmarks

https://lapcatsoftware.com/articles/2026/7/1.html
1•zdw•27m ago•0 comments

How to Build a Minimal ZFS NAS Without Synology, QNAP, TrueNAS

https://neil.computer/notes/how-to-setup-minimal-zfs-nas-without-truenas/
18•4diii•31m ago•2 comments

Traceburn, a local profiler that found 69% avoidable agent spend

https://github.com/TommyTranX/traceburn
1•tt_ay•31m ago•0 comments

How to avoid being held up by the labs

https://www.siliconcontinent.com/p/how-to-avoid-being-held-up-by-the
2•dash2•33m ago•0 comments

Show HN: I built an AI hairstyle preview tool before your next haircut

https://hairstylespro.com
1•shanxi•37m ago•0 comments

Show HN: 0day Rubbish – AI Vulnerability Discovery Platform (0day-Rubbish.com)

https://0day-rubbish.com/
1•wisdomtreelzz•39m ago•0 comments

Trump administration lifts restrictions on OpenAI's GPT 5.6

https://www.axios.com/2026/07/08/openai-gpt-trump-ban-lifted
4•jessesoo•48m ago•4 comments

Linus Torvalds Warned Everyone About Microsoft – Now It's Happening in RT

https://www.youtube.com/watch?v=_Qo3gKdgvMs
2•cable2600•51m ago•0 comments

Kortix

https://kortix.com
2•handfuloflight•55m ago•0 comments

Understanding the Go Runtime: Profiling

https://internals-for-interns.com/posts/go-runtime-profiling/
1•valyala•55m ago•0 comments

Running go-to-market like an engineer: my first 90 days at a dev tool

https://tessakriesel.com/how-i-grew-signups-71-in-90-days-by-running-gtm-like-an-engineer/
1•builtfordevs•56m ago•0 comments

Show HN: Mold, an autonomous zine about AI culture

https://www.moldzine.ai/
2•gabelev•58m ago•1 comments

Half of Americans struggle to afford groceries and gas, exclusive poll finds

https://www.theguardian.com/business/2026/jul/07/cost-of-living-poll-groceries-gas
8•rawgabbit•1h ago•3 comments

So you want to learn physics (second edition, 2021)

https://www.susanrigetti.com/physics
2•azhenley•1h ago•0 comments

Show HN: AI or Not

https://aiornot.vote/
1•buffer_overlord•1h ago•0 comments

Agent Data Injection Attacks

https://arxiv.org/abs/2607.05120
4•juppytt•1h ago•2 comments