Native downloads for Windows, Linux, and macOS.
Jallarhorn™ monitors devices, services, and APIs with flat per-device pricing — not per-sensor metering. One installer per platform. SSO, SLA reports, and a custom-sensor framework included where the incumbent tools charge extra.
What Jallarhorn does
Three jobs, done well. Start simple, extend when you need to.
Sensors
Native plugins for every common protocol — ping, TCP, DNS, SSL, HTTP/S, SSH, WinRM, SNMP v1/v2c/v3, plus database and process probes. When something is not native, a five-plugin custom framework covers the rest.
Alerting
Threshold evaluation every 30 seconds. Maintenance windows, duplicate suppression, ack/resolve, auto-resolve. Routes to Slack, Microsoft Teams, PagerDuty, Discord, Opsgenie, email, generic webhook, or Web Push.
Federation
Run a control instance per site. The farm aggregator fans queries out with partial-results tolerance, so one down node does not blind the NOC. Write-proxy routes to the correct instance automatically.
Why Jallarhorn
Built for engineers who have priced a renewal quote, wrestled an XML template, or inherited an unmaintained config tree.
One installer per platform
Download the installer for Linux, macOS, or Windows and you are up. No application server, no Windows-only requirement, no proprietary database. The installer fetches and configures the components it needs.
SSO included in Business
LDAP, SAML (Entra ID, Okta, Google Workspace), and OIDC in the $79/mo tier. Many incumbent tools quote Active Directory integration as an enterprise-quote add-on. Jallarhorn does not.
SLA PDF reports in-box
SLA calculation, PDF render, and CSV / HTML export ship with Business. A common pattern in this category is to license SLA reporting as a separate add-on; we don't. You should not have to pay twice for the same number.
Custom-sensor framework
Five small plugins — exec-script, HTTP-JSON with JSONPath, webhook-push, Prometheus scrape, and Docker-image — cover roughly 70% of the long tail without writing a bespoke plugin for every integration.
Per-device pricing, not per-sensor
One device equals one license slot, whether it has five sensors or fifty. Auto-discovery does not bill-spike your renewal. The sensor scheduler tolerates temporary overage gracefully.
Signed releases from day one
Cosign keyless signing (GitHub OIDC) and SPDX SBOMs on every release. Verifiable supply chain out of the box — not a security-team retrofit.
Pricing
Flat tiers. Real numbers. No quote-only.
Free
Up to 10 devices
- All sensor protocols
- Custom-script framework
- Auto-discovery
- Email alerts, 30-day retention
- Community support
Office
Up to 100 devices · $0.29/device
- Everything in Free
- Slack, Teams, PagerDuty, Discord, Opsgenie
- Web Push (PWA)
- 1-year retention, unlimited users
- Email support, next business day
Business
Up to 500 devices · $0.16/device
- Everything in Office
- Federation across sites
- LDAP, SAML, OIDC SSO · RBAC
- REST API, SLA PDF, CSV/HTML export
- 5-year retention, priority support
Enterprise
Unlimited devices
- Everything in Business
- Custom SLA with uptime credits
- Dedicated support contact
- Volume pricing · air-gapped install
- Custom retention
A flat price instead of a renewal quote.
1. The per-sensor squeeze.
Per-sensor monitoring tools price every interface, every disk volume, every check as a billable unit. Auto-discovery makes the bill grow whether you watched the new sensors or not. Renewal quotes climb year-over-year as the inventory grows.
2. The Jallarhorn alternative.
Jallarhorn Office is $29/mo for 100 devices — roughly $0.29 per device per month. Business is $79/mo for 500 devices. No sensor metering. No quote process for standard tiers. Published numbers, published caps, published on this page.
3. The migration path.
A written migration guide maps your existing per-sensor catalog to Jallarhorn equivalents (native plugin, SNMP OID template, or custom-script framework). Start by running Jallarhorn in parallel on a 10-device Free tier, port your top sensors, then cut over.
Try Jallarhorn free.
10 devices. Card on file, but no charge until you outgrow Free. Same installer, same features as the paid tiers — we only bill when your device count crosses 10.