fivenines.io has no ongoing free tier; what it offers is a trial that expires. Linux server monitoring with real-time dashboards and alerting — no permanent free tier… Verified October 2026. Compare with 24 alternatives in Monitoring.
How it ended: effective 2026-05-15 — fivenines.io removed its Free plan (5 monitors, 1 team member, 1 month of data retention) between the archived copies of its site from 2026-05-13 and 2026-05-15. Paid plans now start at €19 a month, with a 14-day free trial. Source ↗ Full history ↓
A verdict here is not a fixed property of the vendor. A one-off pricing event demotes a vendor while its recorded date falls in the last 180 days and then lapses on its own, with nothing about the vendor having changed; a standing condition — a free tier withdrawn and not restored, a product retired — does not lapse with time. This one rests on a standing condition, so it does not lapse.
Subtypes in Monitoring: host_metrics — an agent you install on a machine reports CPU, memory, disk and process state for that machine. We read that on 2026-09-01 from https://fivenines.io/, where it says: “Server metrics via the open-source agent on Linux and Windows.” How we use this.
fivenines.io has no ongoing free tier; what it offers is a trial that expires: Linux server monitoring with real-time dashboards and alerting — no permanent free tier… Its free tier has ended — one recorded free tier removal, on 2026-05-15. We no longer rate it. Best for monitoring workloads — 24 alternatives available.
Linux server monitoring with real-time dashboards and alerting — no permanent free tier. 14-day free trial with no credit card required; paid plans from €19/month.
We read that on 2026-10-25 from https://fivenines.io/, and our check recorded: the page names fivenines.io as "fivenines io" and states "€19".
No credit card · 14-day free trial · Live in 2 minutes
How fivenines.io compares against every one of the 24 we list, not against a selection of them. A surface with room for every member of a tied set may rotate their order. A surface with room for only some of them names none of them, because which ones it named would be the claim, and a claim seeded on the date is not the one we serve tomorrow. How we decide this.
| Service | Free Tier | Stability |
|---|---|---|
| fivenines.io | Trial | risky |
| skylight.io | Free Application performance monitoring — free for first 100,000 traces/month. |
stable |
| New Relic | Free Full observability platform — 100 GB data ingest/month, 1 full platform user, unlimited basic users, 500 synthetic checks, 8+ days retention |
stable |
| Middleware.io | Free Full-stack observability platform — free forever plan: 100 GB/month data (APM, logs, infrastructure, traces, RUM, synthetics, database, serverless), 1,000 RUM sessions/month, 20,000 synthetic checks/month, 14-day data retention, unlimited users |
stable |
| syagent.com | Free Free server monitoring service with alerts and metrics. Up to 25 servers and 25 uptime monitoring instances. |
stable |
| Simple Observability | Free Powerful server monitoring in a unified platform for metrics and logs, with no setup complexity. Free for one server. |
stable |
| Datadog | Free Infrastructure monitoring free for up to 5 hosts with 1-day metric retention |
stable |
| BetterStack | Free 10 uptime monitors, 3 GB logs (3-day retention), 100K exceptions/mo, 5K session replays, 30 GB metrics, 1 status page, 1 responder |
stable |
| Google Cloud Monitoring | Always Free Always Free: all non-chargeable Google Cloud metrics, first 1M monitoring API calls/month. Dashboards, alerting, and uptime checks for GCP resources
|
unrated |
| SigNoz | Free OSS OpenTelemetry-native observability with logs, metrics and traces in one tool. The community edition is free to self-host. |
stable |
| AppSignal | Free Application monitoring (APM, errors, logging) — Our free plan is perfect for startups, hobby, or side-projects 30K requests 1GB logging 5-day retention |
caution |
| Axiom | Personal Observability platform — 500 GB ingest/month, 25 GB storage, 30-day retention, 2 datasets, 1 user, 10 GB-hrs/mo query compute, 256 fields/dataset, 3 monitors, Email/Discord notifiers only |
unrated |
| Elastic | Free OSS The Elastic Stack — Elasticsearch, Kibana, ingest and basic security — self-managed at no cost on the Free and Open tier under the Elastic License and SSPL, with community support. Platinum (existing customers only) and Enterprise are custom-priced and add machine learning, cross-cluster… |
stable |
| Grafana | Free OSS Grafana OSS — the self-hosted dashboarding and alerting front end, free under AGPL-3.0-only with Apache-2.0 exceptions. Unifies 150+ data sources into one dashboard and supports observability-as-code. |
stable |
| 360 Monitoring | Lite Server and website monitoring (formerly Nixstats) — free Lite plan: 1 server monitor, 5 site monitors, 10-minute check interval, 24-hour data retention, email alerts |
stable |
| bleemeo.com | Free Free for 3 servers, 5 uptime monitors, unlimited users, unlimited dashboards, unlimited alerting rules. |
unrated |
| Sematext | Basic (Free) Observability platform — Logs: 500 MB/day ingestion, 7-day retention. Monitoring: 3 hosts, 3 containers/host, 30-min data retention, 1 alert rule. |
stable |
| Sentry | Developer Developer tier: 1 user, 5K errors/month, 5M spans/month, 50 session replays, 5GB application logs, 1GB attachments |
stable |
| inspector.dev | Free A complete Real-Time monitoring dashboard in less than one minute with a free forever tier. |
source unconfirmed |
| Prometheus | Free OSS Free OSS (Apache 2.0). CNCF graduated time-series monitoring and alerting. |
source unconfirmed |
| netdata.cloud | Free Netdata is an open-source tool to collect real-time metrics. It's a growing product and can also be found on GitHub! |
unrated |
| Jaeger | Free OSS Free OSS (Apache 2.0). CNCF graduated distributed tracing system. |
source unconfirmed |
| Grafana Cloud | Free Free tier includes access to all Grafana Cloud services with limited usage, 14-day retention, and community support. 10k metric series, 50 GB logs, and 50 GB traces are included. |
stable |
| Hyperping | Free Uptime and status page monitoring — free plan: 20 monitors (HTTP, port, ping, keyword), 5-minute check interval, 1 basic status page with real-time updates and subscriber notifications, 1 seat, 1 server monitoring agent, email and webhook alerts |
stable |
| Xitoring.com | Free Superseded: As of 2026-08-28, xitoring.com reads: The page offers a 14-day free trial, and then paid plans starting at $4.99/mo for Uptime + SSL. We are not publishing our stored Xitoring.com terms beside it — our own pricing change record, discovered 2026-08-28, names them as the previous ones. |
unrated — change unconfirmed |
Left out of this list: UptimeRobot (shares no subtype with this product), Pulsetic (shares no subtype with this product), Healthchecks.io (shares no subtype with this product), StatusCake (shares no subtype with this product), PagerDuty (shares no subtype with this product), Cronitor (shares no subtype with this product), Uptimia (shares no subtype with this product), OnlineOrNot (shares no subtype with this product), incident.io (shares no subtype with this product), StatusPile (shares no subtype with this product), assertible.com (shares no subtype with this product), Core Web Vitals History (none of this category's subtypes apply), deadmanssnitch.com (shares no subtype with this product), downtimemonkey.com (shares no subtype with this product), economize.cloud (none of this category's subtypes apply), incidenthub.cloud (shares no subtype with this product), linkok.com (none of this category's subtypes apply), loader.io (none of this category's subtypes apply), MonitorMonk (shares no subtype with this product), OntarioNet.ca CN Test (none of this category's subtypes apply), pagecrawl.io (shares no subtype with this product), pagertree.com (shares no subtype with this product), phare.io (shares no subtype with this product), pingbreak.com (shares no subtype with this product), Pingmeter.com (shares no subtype with this product), pingpong.one (shares no subtype with this product), robusta.dev (none of this category's subtypes apply), Servervana (shares no subtype with this product), sitesure.net (shares no subtype with this product), statusgator.com (shares no subtype with this product), SweetUptime (shares no subtype with this product), UptimeObserver.com (shares no subtype with this product), uptimetoolbox.com (shares no subtype with this product), Wachete (shares no subtype with this product). Each is still listed in Monitoring, with the vendor's own words we read that from on its page. How we decide this.
We do not push notifications. Every change we record is readable the moment it lands, and the JSON answer carries an ETag — send it back as If-None-Match and an unchanged answer costs one 304.
curl https://agentdeals.dev/api/changes?vendor=fivenines.io
curl https://agentdeals.dev/pricing-changes/feed.xml?vendor=fivenines.io