
Website Change Monitoring & API Diff Alerts | PingChange
Monitor webpages and OpenAPI specs for changes with Slack, email, and webhook alerts.
epigos · HN
PingChange – monitor web pages and OpenAPI specs for meaningful changes
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Monitor webpages and OpenAPI specs for changes with Slack, email, and webhook alerts.
epigos · HN
PingChange – monitor web pages and OpenAPI specs for meaningful changes

Turn webhooks from CI, coding agents, scripts, and monitors into source-branded iPhone notifications, approvals, replies, and Live Activities.
u/GhostInfernoX · Reddit
beautiful notifications & live activities controlled via webhooks and a CLI i made this so i could send custom ios notifications & live activities from anything with a webhook or cli. you can set the text, image, and link, or start, update, and end live activities. there’s also a cli so coding agents can send notifications or ask for approval. it’s called hark and it’s free for up to 10,000 push notifications a month. it’s also completely open source: https://github.com

Scan any URL for security vulnerabilities: JS CVEs, hidden trackers, and misconfigurations.
@oldagencydev · X
Is this still an open offer?😂I'm launching and trying to get it out there. Free no-signup security scans of any URL to catch everything including vibe-coded app issues. Then paid plans for everything up to enterprise! Already using at my other company!

Monitor 160+ cloud vendors for outages and receive alerts via email, Slack, Discord, or webhooks.
@outagedeck · X
OutageDeck, outage alerts for 168 cloud vendors (AWS, Cloudflare, OpenAI, Slack), built only on their official status feeds. No crowd reports, no scraping, no false positives. Free email alerts for 5 providers + a free JSON API, no key.

Automatically monitor competitor websites and receive instant alerts when changes occur.
@NRotaru · X

Get emailed when plain-English alerts become true: price drops, stock restocks, and web changes.
alertchecker · HN
AlertChecker – get emailed when a plain-English statement comes true

Monitor Reddit subreddits for keywords and receive alerts when potential customers mention your product.
@tarasshyn · X
With the help of RedReplier 😉

SecureWatch - Free website security scanner with 75+ vulnerability tests, WAF protection, SSL monitoring, and real-time alerts.
@rapidrewind0 · X
2nd link is still in development

Permanent webhook endpoints and instant HTTPS tunnels for developers and AI agents.
@BinaryScriptar · X
Introducing OtterKit. Always-on webhook endpoints and instant tunnels, built for developers and their AI agents. It started with a problem I kept hitting: every time my coding agent needed to test a Stripe or GitHub webhook, it had to open a tunnel. What OtterKit does • Permanent webhook URLs that answer senders 24/7 with the status, body and headers you choose, verify signatures on arrival (Stripe, GitHub, Shopify, Slack and 12 more), store full history, and forward matching events to your app, signed and retried • Instant HTTPS tunnels to any local port in one command, stable subdomains, auto stop, basic auth • Replay any captured request, edit the payload, re sign it, fire it at your local handler • Pulses: scheduled HTTP calls and dead man's switches with email alerts • Payload drift detection: baseline the JSON shape per event type, get emailed when a provider changes it • Custom domains ( and an email inbox on the same endpoint • A

Monitor website uptime, SSL certificates, and DNS from a centralized dashboard with alerts to Slack, email, and SMS.
@adambalee · X
Built Sentinel 👋 Instant free URL check on the homepage. Every free account also includes 1 public status page, even for commercial use.

Scan your website or app for security issues in seconds, block attacks and bots with a managed firewall, monitor uptime with domain and SSL expiry warnings, and get expert fixes fo
@YounesLamnabhi · X
a mist to have security kit, pentest and monitoring, can be installed in seconds.

Free morning threat-intelligence dashboard with live botnet map, CVEs, IOC hunting, and security headlines.
@LindenSec · X
Felt like vibe-coding something I'd use in my daily workroutine, so I made Pewpew map with live IOC's, a "HUNT' button to pull all recent IOC's/C2's from AbuseCH. Add your personal stack in a watchlist. See any new KEV CVE's. All in one dashboard.