Observed arrival · 2026-10-28
Diffmonitors makes polling intervals visible
A page and API monitoring tool that compares snapshots and sends changes through channels including webhooks, email, Slack, and streaming connections.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teams tracking APIs, pages, feeds, or prices
- Worth noticing
- Its stock simulation shows an hourly poll missing a 2-minute-30-second event; the page notes that changes between checks are never seen.
Field notes
The demo lets visitors paste a URL or choose sample sources, then inspect a check log and compare what different polling rates would catch. The page describes signed webhooks carrying RFC 6902 JSON Patch, alongside email, Slack, Discord, SSE, and WebSocket delivery. It says recent history is replayed when the check rate changes, while warning that a change occurring entirely between checks will not be observed.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue