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Latest High-Signal Products

TodayMedium confidence

Idempotency4j is a Java idempotency library with pluggable storage backends and Spring Web / Spring Boot support. This library solves the problem of ensuring that sensitive endpoints do not trigger side-effects multiple times - this is especially useful for any endpoints that...

Published: May 12, 2026

  • GitHub
  • News
  • Storage
Signal score: 91.6
TodayLow confidence

Hi HN, we’re Sai and Aayush, and we’re building Hypercubic ( https://www.hypercubic.ai/ ), bringing AI tools to the mainframe and COBOL world. (We did a Launch HN last year: https://news.ycombinator.com/item?id=45877517 .) Today we’re launching Hopper, an agentic development e...

Published: May 12, 2026

  • Development
  • News
Signal score: 86
TodayMedium confidence

Hi, I built Survser as a more affordable survey / user research solution because I found existing tools to be bloated and unnecessarily expensive. Hope someone finds it useful.

Published: May 12, 2026

  • Rising
  • New
Signal score: 82.1
TodayMedium confidence

Agentic problem solving in its current state is very brittle. I fell in love with it, but it creates as many problems as it solves. I'm Ben Cochran, I spent 20+ years in the trenches with full-stack Engineering, DevOps, high performance computing & ML with stints at NVIDIA, AM...

Published: May 12, 2026

  • Agents
  • GitHub
  • News
Signal score: 81.7

Hopper

  • Product Hunt
TodayMedium confidence

First agentic development environment for mainframe/COBOL.

Published: May 12, 2026

  • Developer Tools
  • Artificial Intelligence
  • Productivity
Signal score: 81.1