Watchflare
Watchflare: A focused, free monitoring stack for teams managing Linux and macOS systems. Ranked #26 of 38 in Server Monitoring by our editors (6.9/10); pricing: Free plan; best for lightweight Linux and macOS host monitoring.
At a glance
- Editor score6.9 / 10
- PricingFree plan
- Best forLightweight Linux and macOS host monitoring
- Free planYes
- Paid fromFree
- Facts checked20 Sep 2026
Where it wins
- Live host metrics with threshold and offline alerts
- Docker and Podman container metrics plus inventory checks
- TLS 1.3, request signing and CA pinning
Where it doesn't
- OS coverage centers on systemd-based Linux and macOS 11+
- Requires self-hosted Hub and agents
- Narrower scope than full infrastructure suites
Our verdict on Watchflare
Watchflare is an open-source, self-hosted server-monitoring product for teams that want infrastructure data kept on their own systems. Lightweight agents send host data to a central Hub with a browser dashboard and live updates. It covers Linux distributions with systemd, including Ubuntu 18.04+, Debian 10+, RHEL/CentOS 7+, Fedora 30+, Amazon Linux 2+ and Arch Linux, as well as macOS 11 or later. Core monitoring includes CPU, memory, disk, network, load, swap and temperature metrics, with optional Docker and Podman container visibility.
Its strongest fit is a focused host-monitoring workflow rather than a broad infrastructure suite. Watchflare combines package inventory, outdated-package detection, systemd service inventory, failed-service detection and threshold alerts for CPU, memory, disk, load and temperature. Host-offline detection can notify through email or webhooks. A local write-ahead log can replay data after Hub outages, while PostgreSQL with TimescaleDB stores historical data. Integrations with Docker, Podman, Homebrew, systemd, PostgreSQL and TimescaleDB suit teams already working within that ecosystem.
The security posture is a notable strength for a self-hosted tool: Watchflare supports TLS 1.3, HMAC-SHA256 request signing and certificate-authority pinning. The published offering is free to self-host under AGPL-3.0, with retention varying by aggregation table from 24 hours for raw samples to one year for 8-hour aggregates. Choose Watchflare if you need lightweight Linux or macOS monitoring, container metrics and operational alerts under your own control. Choose a broader infrastructure suite if you need wider platform coverage or a more expansive monitoring scope.
Your product? Our editors can test Watchflare in depth and publish a review, labelled as paid · from $149/mo →
Watchflare pricing
Watchflare fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Included hosts | Not verified |
| Metric retention | Not verified |
| Monitoring method | Agent |
| Supported operating systems | Linux distributions with systemd, including Ubuntu 18.04+, Debian 10+, RHEL/CentOS 7+, Fedora 30+, Amazon Linux 2+, Arch Linux; macOS 11 or later |
| Server auto-discovery | Not verified |
| Process monitoring | Yes |
| Container monitoring | Yes |
| Deployment | Self-hosted |
| Platforms | Web, macOS, Linux |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 8 integrations: Docker, Podman, PostgreSQL, TimescaleDB, email, webhooks … |
| Pricing | Free plan |
| Website | watchflare.io |
| Facts checked | 20 Sep 2026 |
Watchflare integrations
Watchflare lists 8 integrations on its own site.
- Docker
- Podman
- PostgreSQL
- TimescaleDB
- webhooks
- Homebrew
- systemd
Alternatives to Watchflare
- CheckmkA broad monitoring platform with a free edition and high paid entry price.9.4
- ZabbixA broad monitoring platform with a free self-hosted edition and managed cloud options.9.3
- NetdataAffordable infrastructure visibility with per-second metrics, logs, alerts, and AI assistance.9.2
See all Watchflare alternatives →
Also Ranked In
Watchflare is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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