
DKIM.pro
Monitor SPF, DKIM and DMARC before email breaks
What it does
DKIM.pro helps teams keep email authentication healthy across their domains. It checks SPF, DKIM and DMARC records, generates DNS-ready configs, monitors drift, parses DMARC aggregate reports, and sends alerts to email, Slack, PagerDuty or webhooks. Unlike generic DNS tools, it is focused on deliverability and authentication, so teams can catch broken records and unsafe policy changes before they affect inbox placement.
Does the same job
all alternatives →

Email Deliverability API & Checker26d ago · web-production-80c77.up.railway.app · ▲2Instantly audit SPF, DKIM & DMARC to stop landing in spam.
- DCDMARC Checker2024 · dmarcchecker.app · ▲70

More dev tools this month
the category →



The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com

Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai


- NW
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com
- FM
Dev tools · May 2026 · github.com