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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•9mo 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: MultiWA

https://github.com/ribato22/MultiWA
1•ribato•36s ago•0 comments

Trapped in the Hell of Social Comparison

https://www.noahpinion.blog/p/trapped-in-the-hell-of-social-comparison
1•herbertl•2m ago•0 comments

Show HN: Self-hosted alternative to Goodreads. Own your reading data

https://github.com/raghavan/BookSync
1•raghavankl•5m ago•1 comments

Artificial Intelligence and Magical Thinking

http://edwardfeser.blogspot.com/2019/03/artificial-intelligence-and-magical.html
2•b-man•13m ago•0 comments

I built a 3D racing engine that runs on an ESP32-S3 (8MB PSRAM)

https://medium.com/@davidmonterocrespo24/how-i-built-the-first-3d-racing-game-for-esp32-s3-becaus...
1•dmonterocrespo•13m ago•1 comments

AI Agents Are Making Software More Like Biology

https://twitter.com/pablofariasnew/status/2023212613015150657
1•zenva•16m ago•0 comments

Old School Telecine, circa 1980s (2017)

https://www.liftgammagain.com/forum/index.php?threads/old-school-telecine-circa-1980s.9984/
2•exvi•19m ago•0 comments

Keep screenshots/automation working while the MacBook lid is closed

1•xtongs•21m ago•1 comments

Forbes 250 Americas greatest innovators

https://www.forbes.com/sites/alexknapp/2026/02/11/forbes-250-americas-greatest-innovators
1•norbel•21m ago•0 comments

I made the first iMessage API that can change chat background

https://github.com/photon-hq/advanced-imessage-kit/blob/main/examples/background-set.ts
1•RyanZhuuuu•23m ago•0 comments

Technical Update and Correct Live Link

https://unheededly-unmouthed-tawanda.ngrok-free.dev
1•STEM_SAFE•24m ago•1 comments

Non-globally-rigid inversive-distance circle packings [pdf]

https://w3.cs.jmu.edu/bowersjc/files/BowersCirclePackingTalk_ICMS2016.pdf
1•gsf_emergency_6•24m ago•0 comments

CallCombat – Sales Call Roleplay

https://callcombat.com
1•rogutkuba•28m ago•0 comments

LobsterTank – Firecracker microVM hosting for OpenClaw agents ($2/month)

https://lobstertank.me
1•_3u10•28m ago•0 comments

Anthropic improves free Claude tier as OpenAI prepares insert ads into ChatGPT

https://www.engadget.com/ai/anthropic-beefs-up-claudes-free-tier-as-openai-prepares-to-stuff-ads-...
3•gnabgib•30m ago•0 comments

WebMCP early preview available in Chrome

https://developer.chrome.com/blog/webmcp-epp
1•RyanShook•32m ago•0 comments

Show HN: Purple Computer – Turn an old laptop into a calm first kids computer

https://purplecomputer.org
3•imtavi•34m ago•2 comments

Show HN: ClaudeCraft – Minecraft server where Claude agents do everything

2•skullmag•35m ago•2 comments

A Stock Market Doom Loop Is Hitting Everything That Touches AI

https://www.bloomberg.com/news/articles/2026-02-15/a-stock-market-doom-loop-is-hitting-everything...
3•virgildotcodes•38m ago•1 comments

Show HN: SkillForge – Turn Screen Recordings into Agent-Ready Skills

https://skillforge.expert
1•YaraDori•46m ago•0 comments

Cost of Housing

https://geohot.github.io//blog/jekyll/update/2026/02/16/cost-of-housing.html
5•kart23•47m ago•0 comments

Show HN: I built a tool to poison audio files against AI training models

2•STEM_SAFE•50m ago•1 comments

The Uncanny Fluency

https://residualstream.app/blog/the-uncanny-fluency/
3•Abeeprodev•53m ago•1 comments

Why Running Alone Feels Harder Than Running with Someone

https://vo2maxpro.com/blog/why-running-alone-feels-harder
1•GoodluckH•55m ago•0 comments

Show HN: Crabify, a Spotify TUI

https://github.com/eiiot/crabify
3•eiiot•57m ago•1 comments

Aeris: Real-Time 3D Flight Tracking

https://aeris.edbn.me/
1•thunderbong•57m ago•0 comments

Harness engineering: leveraging Codex in an agent-first world

https://openai.com/index/harness-engineering/
2•vinhnx•1h ago•0 comments

Replacement crew docks at space station, boosts crew back to seven (PMC medical?

https://spaceflightnow.com/2026/02/15/replacement-crew-docks-at-space-station-boosts-crew-back-to...
1•bookmtn•1h ago•0 comments

Show HN: I replaced my SaaS stack with a single AI agent running on a Mac Mini

1•mupengism•1h ago•0 comments

A Single Reason to Not Vibe Code

https://asindu.xyz/a-single-reason-to-not-vibe-code
3•vinhnx•1h ago•0 comments