Developer tools and infrastructure
Uptime and API monitoring
Tools that check websites, APIs, servers and cron jobs for downtime, errors and latency, alerting developers via Slack, email or push and often publishing public status pages.
Built for: Indie developers and small SaaS teams
Projects since May 04
162
Different builders
155
Last 4 weeks vs 8 before
-7%
AI is the core
9.9%
Projects per week
Mostly web app (52%), api or backend service (15%), developer tool or library (15%) · from r/SideProject, r/SaaS, r/vibecoding, r/IMadeThis
Latest
- StatusNest — Monitors website uptime with automatic checks and detects incidents, served as a self-hosted backend.“I built an uptime monitor from scratch”
- Pathly — Monitors multi-step user journeys by running browser click flows and checking the backend APIs behind them, not just HTTP status.“Pathly - watches a real user path, not just HTTP 200”
- Spot Downtime — Monitors websites, APIs, ports, DNS and cron jobs for downtime and SSL certificate expiry, and sends alerts to Slack, Discord, email or webhooks.“I missed an SSL renewal, found SSL monitoring was paywalled everywhere, so I built my own”
- ForgeOps — Gathers errors, traces, metrics, deployments, SQL and dependency data in one place and points engineers to likely causes of production incidents.“Looking for software engineers to give honest feedback on a new tool”
- Generates a temporary URL that receives webhook requests and shows their raw payloads and headers live in the browser.“Building a free visual webhook debugger! Would you use this?”
- CostPulse — Sends Slack, Teams or email alerts when a day's AWS spend exceeds a threshold, explaining the spike in billing units.“I built AWS cost alerts that explain the spike, not just flag it. Looking for honest feedback”
- UPTYME — Monitors URLs and TLS certificates on a schedule, checks response content, and alerts on downtime from a self-hosted dashboard.“I built a self-hosted uptime monitor in Lua + SQLite on a Rust-based engine”
- FixLoop — Stores incident context, AI recommendations, human overrides and outcomes, then recalls similar past incidents to inform future decisions.“Fixloop made by engineer for engineering teams”
- IncidentPilot — Analyzes production incidents by recalling past incidents, fixes, and lessons from long-term memory to suggest diagnoses and postmortems.“A incident pilot that detects the makes the new joiner work easy”
- OnCall AI — Correlates production alerts, recent git diffs, and past postmortems with an LLM and long-term memory to suggest incident fixes and flag risky changes before deploy.“How Hindsight Stopped Me From Killing Production at 2 AM”
- CoIsland — Runs scheduled monitors on developer and business tools and shows matching alerts in the MacBook notch, with an option to hand alerts to a coding agent.“My MacBook notch did nothing for 3 years, so I built CoIsland..”
- Doyouok — Alerts you when a scheduled job or cron task fails to check in on its expected schedule.“I built Doyouok to know when my cron jobs silently stop running”
- mystra.run — Monitors signup, confirmation emails, and checkout after each deploy and alerts when one starts failing.“I built a monitor that tells you when a deploy breaks signup, emails, or checkout”
- xNode360 — Maps domains, servers, databases and services as connected nodes with health checks and secret expiry tracking.“I kept losing track of what runs where, so I built a live map of my infra”
- CoreWatch — Runs automated uptime checks on HTTP and TCP endpoints, audits SSL certificates for expiry, and tracks software contract renewals.“I’m a mechatronics engineer who built a lightweight uptime & 30-day SSL monitoring tool. Looking for honest feedback!”
- Continuously monitors a product and alerts the team when something breaks.“🚨How much revenue are you losing between the moment something breaks and the moment your team notices?”
- DeviceKnock — Monitors network devices for downtime and sends email alerts when they go offline or come back online.“Deviceknock”
- Bionic Uptime — Monitors website uptime and emails only after failures are confirmed from a second location, with optional checks for phrases on the page.“I built a website monitor that checks from two cities before it ever emails you”
- WorldWebhook — Maps each provider's raw webhook event into one canonical event type and re-delivers it to your endpoints, signed and retried on failure.“How do you deal with every provider's webhooks being shaped differently?”
- Server Control — Monitors Linux servers over SSH and manages Docker containers, systemd services, remote files and a mail server from an Android phone.“I built an agentless Android dashboard for my Linux servers — free until Sept 22”
Most discussed
- Parses local Sapience surveillance logs on a work PC into a SQLite database and generates an HTML activity report of the user's own captured data.“My company is spying on my productivity - Now I can see, too”
- NotifKit — Provides a self-hosted notification layer handling retries, scheduling, rate limits, deduplication, preferences, channel fallbacks and delivery tracking.“Open sourced my notification infra (delivers 230K+ notifs everyday) so nobody else has to pay per message. Self-hosted on your own Postgres/Redis, 0 cost per message.”
- mydev.cat — Runs as a desktop pet cat that logs a developer's work, writes reports, and makes shareable content.“You code as usual. A cat logs your development (my new desktop pet)”
- Fawdy — Connects to servers over SSH, reads logs and configs, and writes plain-English root cause analyses of incidents.“I got tired of digging through logs at 2am, so i built an AI that SSHs into your servers and tells you what broke”
- Creates and hosts status pages for showing service uptime to users.“Three months after my first paying customer, here’s where my SaaS is today.”
- Statsy — Hosts a status page with automatic uptime monitoring for services.“How to get first users?”
- Schedules, chains and retries jobs across multiple machines through a lightweight agent on each host, and emails alerts when jobs fail.“Built a tool for a problem I had, now stuck on who to actually sell it to”
- Collects app errors, explains in plain English what broke, and opens a fix pull request for review.“How do you monitor your apps after you launch them?”
- upmend — Monitors whether key user flows like sign-up and checkout work and explains failures in plain English.“Watched someone lose - 40k because their no-code app broke and nobody noticed”
- Traces real-time API costs using ephemeral storage in Upstash Redis.“Feedback needed: Building an ephemeral real-time API cost tracer using Next.js 15 & Upstash Redis. How would you handle prompt injection spikes?”