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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!

Show HN: Collaborate.dev – Multiplayer Visual Desktop for Coding Agents

https://collaborate.dev/remote/
1•austinvhuang•1m ago•0 comments

Show HN: Benchmarklist: track AI benchmarks (2.4k+), models, and capabilities

https://benchmarklist.com/
1•davidtsong•1m ago•0 comments

Hacker Fables – A satirical cyberpunk novella you can read as a man page

https://hacker-fables.onrender.com
1•birdculture•2m ago•0 comments

What If the Harness Comes Before Pretraining? A Data Flywheel Perspective

https://hanchenli.github.io/blog/posts/harness_pretraining/
1•matt_d•3m ago•0 comments

So long r/rust, and thanks for all the Slop!

https://old.reddit.com/r/rust/comments/1uwmef6/so_long_rrust_and_thanks_for_all_the_slop/
1•bel8•4m ago•0 comments

Show HN: Betula Fuzzy Search

https://gist.github.com/overflowy/9b6d30c7b65dd23c8899636595d88227
1•overflowy•5m ago•0 comments

Mimesys: Turn Resource Usage Traces into Executable Workloads

https://www.usenix.org/conference/osdi26/presentation/kim-donghyun
1•matt_d•6m ago•1 comments

Alman: German, Simplified

https://alman.ai/
1•tosh•6m ago•0 comments

Murati's Thinking Machines Releases Open-Weights 975B Parameter LLM

https://thinkingmachines.ai/inkling/
3•htrp•7m ago•1 comments

Disposable Software

https://seths.blog/2026/07/disposable-software/
3•herbertl•8m ago•0 comments

C Strings: A 50-Year Mistake – By Trần Thành Long

https://longtran2904.substack.com/p/c-strings-a-50-year-mistake
2•rbanffy•8m ago•0 comments

Sorel Caribou Boots: Great Product, Disappointing Online Shop

https://micro.mjanssen.nl/2026/07/15/200303.html
1•marc0janssen•8m ago•0 comments

Inkling: Our Open-Weights Model

https://thinkingmachines.ai/news/introducing-inkling/
7•vimarsh6739•8m ago•0 comments

Odyssey Linux – a Void-based distro trying to make no-systemd approachable

https://linuxcommunity.io/t/odyssey-linux-a-void-based-distro-trying-to-make-no-systemd-approacha...
1•ashitlerferad•9m ago•0 comments

Show HN: How you auto recover your Claude Code workflow when quota resumes

https://github.com/softcane/cc-session-recover
1•pradeep1177•11m ago•0 comments

The Fight over Humanoid Robots Has Shut Down a Car Factory for the First Time

https://www.wsj.com/business/autos/the-fight-over-humanoid-robots-has-shut-down-a-car-factory-for...
1•bookofjoe•12m ago•2 comments

Show HN: Tarit – a hypervisor which is 2x faster than firecracker

https://github.com/instavm/tarit
1•mkagenius•12m ago•0 comments

Kilocode Acquired by Anaconda

https://www.anaconda.com/blog/kilo-code-joins-anaconda-what-builders-should-know
2•datadrivenangel•14m ago•0 comments

Universal gates from braiding and fusing anyons on quantum hardware

https://www.nature.com/articles/s41586-026-10709-y
2•sbulaev•14m ago•0 comments

Agentic Misalignment in Summer 2026

https://alignment.anthropic.com/2026/agentic-misalignment-summer-2026/
1•lucamark•14m ago•0 comments

Steam Game Cartridges

https://old.reddit.com/r/pcmasterrace/comments/1ux13ui/steam_game_cartridges/
2•ShroudedNight•16m ago•0 comments

State of DESIGN.md 2026 – Survey results

https://getdesign.md/state-of-design-md
2•omeraplak•17m ago•1 comments

Suno hacked, leak reveals scraping data

https://xcancel.com/jason_koebler/status/2077393545850409308?s=20
4•hmokiguess•19m ago•3 comments

Show HN: ForkUnion v3 – Faster OpenMP-style thread-pool for C, C++, Rust, & Zig

https://github.com/ashvardanian/ForkUnion
1•ashvardanian•21m ago•0 comments

A webring for people offering Unoffice Hours

https://unofficehours.com/
1•rekl•21m ago•0 comments

Beyond lithium: how sodium-ion batteries could change the world

https://www.nature.com/articles/d41586-026-02150-y
2•SiempreViernes•21m ago•0 comments

Scrum Doesn't Matter (and It Never Did)

https://kasperowski.com/scrum-doesnt-matter-and-it-never-did/
2•mooreds•22m ago•0 comments

Show HN: Class-diff: A Pharo classes comparer using Needleman-Wunsch

https://github.com/hernanmd/class-diff
1•hernanmd•24m ago•0 comments

Fourteen months of LeafWiki (OSS), in small moments

https://leafwiki.com/blog/fourteen-months-of-leafwiki/
1•perber•24m ago•0 comments

Anthropic, Blackstone, and Hellman and Friedman Introduce Ode with Anthropic

https://www.businesswire.com/news/home/20260715205134/en/Anthropic-Blackstone-and-Hellman-Friedma...
1•petethomas•24m ago•0 comments