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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!

ClawID – Cryptographically verifiable receipts for AI agents

https://holdtheleash.id
1•andrewwoodward•2m ago•0 comments

The Performance of Generics in Go

https://dominik.info/blog/go-generics-performance
1•EspressoGPT•3m ago•0 comments

Show HN: Darkenn – Lights Out style puzzle game with global leaderboard

https://darkenn.com/
1•anirbanhere•4m ago•0 comments

Show HN: Schmaudio – Interactive audio stories where choices change the story

https://schmaudio.net/en/stories
1•skchang•5m ago•0 comments

Rhombus v1.0

https://blog.racket-lang.org/2026/06/rhombus-v1.0.html
1•g0xA52A2A•5m ago•0 comments

Walt Disney Company is the most successful at monetizing human nostalgia

https://www.acquired.fm/episodes/the-walt-disney-company
2•speckx•6m ago•0 comments

YazSes – offline hold-to-talk dictation

https://github.com/MSKazemi/yazses
1•mskazemi•6m ago•0 comments

Bill and Emily Brook Family Heritage Website

https://bembro.com/
2•lollobomb•6m ago•1 comments

I built a Chrome extension to bulk-convert Google Photos motion photos to stills

https://chromewebstore.google.com/detail/bulk-edit-google-photos-w/fnhlolpmhhjdjdlialajdlmlfblchkkh
1•levinyair•8m ago•0 comments

I'm the Agent for Claude Now

https://www.aha.io/engineering/articles/im-the-for-claude-now
3•FigurativeVoid•8m ago•0 comments

Brazilian Psychic Predicts Alien Invasion During World Cup Game Next Week

https://www.coasttocoastam.com/article/brazilian-psychic-predicts-alien-invasion-during-world-cup...
2•austinallegro•9m ago•0 comments

Shoutout to Canadian Youth: A 16-Year-Old Shipped When Graduates Skipped

https://codrlabs.com/blog/shoutout-canadian-youth-shipped-when-graduates-skipped
1•codrlabs•9m ago•0 comments

DeepSeek V4 Flash optimized framework and model variants for DGX Spark

https://github.com/sleepyeldrazi/ds4-nvfp4-spark
2•sleepyeldrazi•11m ago•1 comments

AI and tech are trying to influence the midterm elections

https://text.npr.org/nx-s1-5856359
2•pera•12m ago•0 comments

Search, Discovery, Pills, and Portals

https://contraptions.venkateshrao.com/p/search-discovery-pills-and-portals
1•jger15•12m ago•0 comments

Frontier Spaces

https://marginpoints.substack.com/p/frontier-spaces
1•historian1066•12m ago•0 comments

Ask HN: What did you find out or explore today?

2•blahaj•15m ago•1 comments

AI Agent / Harness Engineer

https://www.saturnterminal.com/
1•Ryanaga•16m ago•0 comments

Y2Kspace: 90s/2000s TV channel surfer in retro rooms

https://y2kspace.com/
1•jeremwhi•16m ago•1 comments

Your Own Private AI, Part 2: Secure Access from Anywhere with Tailscale Aperture

https://10io.com/blog/private-ai-part-2-secure-access-via-tailscale-aperture
1•anactofgod•16m ago•1 comments

Following user outcry, AMD reinstates memory encryption in consumer CPUs

https://arstechnica.com/security/2026/06/following-user-outcry-amd-reinstates-memory-encryption-i...
3•AdmiralAsshat•18m ago•1 comments

Scale Your Superpowers, Not Your Job Titles

https://www.lukew.com/ff/entry.asp?2154
2•speckx•19m ago•0 comments

ULID -- Universally Unique Lexicographically Sortable Identifier

https://github.com/ulid/spec
3•gjvc•20m ago•0 comments

Local lint, type-check and AI security dashboard for modern full-stack projects

https://www.npmjs.com/package/projectlens
1•dagmawibabi•21m ago•1 comments

TamaGo unikernels can now choose between gVisor and lneto network stacks

https://infosec.exchange/@lcars/116736159481184882
3•dolmen•22m ago•0 comments

The Age of the Solopreneur

https://www.stripeeconomics.com/p/the-age-of-the-solopreneur
4•plurby•26m ago•0 comments

Show HN: Sixwhyo – A 6-year-old code reviewer who asks "why?" about everything

https://github.com/hxii/sixwhyo
2•hxii•27m ago•0 comments

Jobs and Software Is Fucked

https://urflow.bearblog.dev/jobs-and-software-is-fucked/
51•speckx•27m ago•16 comments

Civilization – the making of the game of everything [video]

https://www.youtube.com/watch?v=9gM61G29w8g
2•coolwulf•29m ago•0 comments

Show HN: A local rig to test if AI social simulation predicts reality

https://github.com/zzvimercm-git/mirofish-calibration
2•zzvimercm•30m ago•0 comments