IsDown Alternatives in 2026: Five Options Compared at Real Prices

The five realistic options for an IsDown customer in late 2026 are: stay on IsDown, use UptimeRobot's built-in third-party monitoring, StatusGator, IncidentHub, or PulsAPI. Which one is right depends on three things you can check in ten minutes: whether the tool covers your exact vendors, how many vendors you need to watch, and which alert destinations you need.

For a typical stack of 40 vendors, the yearly-billed monthly cost ranges from $23 (PulsAPI Pro, unlimited monitors) to $137 (StatusGator Team). IsDown has the largest catalog of the five at 6,320+ services. StatusGator has the most mature status page and early-warning features. UptimeRobot is the cheapest route if you already pay for it and watch 20 vendors or fewer.

This guide is for engineering and IT teams that use IsDown today, or were about to, and are re-checking the decision after UptimeRobot bought it. PulsAPI is one of the options and we wrote this, so every competitor figure below comes from the vendor's own pricing page, read on 3 November 2026, and the section on PulsAPI starts with what it does not do.

Prices and quotas were read off each vendor's live pricing page on 3 November 2026: isdown.app/pricing, uptimerobot.com/pricing, statusgator.com/plans and incidenthub.cloud/pricing. Where a vendor shows both billing toggles we quote both. UptimeRobot prices in euros and we have not converted them.

We priced one concrete stack, 40 monitored vendors, because a per-tier table hides the thing that actually decides cost: where your stack crosses a quota. We quote the cheapest published route to 40, not the next tier up, so an add-on counts when the vendor sells one.

We left out tools whose pricing or coverage we could not verify on the day, and user-report sites such as Downdetector, which measure complaints rather than what vendors publish. IncidentHub published its own list of IsDown alternatives in September 2026 that covers several more tools; it is worth reading alongside this one, keeping in mind that it, like us, is a vendor.

The table compares entry points. The cost of a 40-vendor stack is in the next section, because that number is where the options really separate.

Forty is roughly where a SaaS company with a few products lands once it counts cloud, payments, email, auth, CI and the AI APIs it calls. It is also past the entry quota of every option except IncidentHub and PulsAPI, so it shows what growth costs.

Staying is a real option and for many teams the right one. IsDown has the largest catalog in this list, ingests private Zendesk and Microsoft 365 status for your own tenant, has SSL certificate monitoring, hosted status pages with subscribers on every plan, and a Datadog integration from the Premium plan. The team is unchanged and both companies have said it stays a standalone product.

The reasons people look elsewhere are cost at scale, because IsDown sells monitors in quotas of 15, 30, 70 and 150, and uncertainty about the long-term product line now that UptimeRobot sells an overlapping feature. If your stack fits your current quota and you rely on the status pages or the Datadog integration, there is little to gain by moving.

Since 23 September 2026 every paid UptimeRobot plan includes an allowance of third-party services, powered by IsDown's provider data, with component selection and alerts through UptimeRobot's existing channels. UptimeRobot says it also uses reports from people using a service as an earlier signal than the vendor's own status page.

This is the obvious choice if you already pay for UptimeRobot for website monitoring and your vendor list is short. The allowance is the limit: 1 on Solo, 20 on Team, 40 on Scale. It is a feature inside an uptime product rather than a dependency tool, so do not expect stack discovery, vendor SLA reporting or impact mapping.

StatusGator is the longest-running product in the category and the one closest to IsDown in scope. It claims the largest catalog at 12,310+ services and sells Early Warning Signals, which aim to notify you before a provider acknowledges an outage. It has the most complete status page feature set here, including private and authenticated pages, custom domains and subscribers, plus private cloud status for AWS, Azure, GCP, Microsoft 365 and Zendesk, and an MCP server.

It is also the most expensive per monitor: 25 monitors for $72 a month billed yearly, then 75 for $137. The free plan covers 3 monitors but caps notifications at 10 a month, so it is a trial, not a way to run production alerting. Choose it if status pages for employees or customers are the main thing you use IsDown for.

IncidentHub is the budget option with generous quotas: 50 monitors on its $35 Starter plan, unlimited notifications, and a free plan with 5 monitors and Slack and Discord. It supports component filtering, picks which incident lifecycle stages alert you, and reads tenant-level status for Microsoft 365 and Azure through official APIs. Its Multi-Client plan offers up to 50 client status pages, which suits MSPs.

The trade-off is coverage. At 1,125+ services, its catalog is less than a fifth of IsDown's, and the company says that is deliberate. Starter also limits you to 4 integrations and 30 days of history. Check your own vendor list against its catalog before anything else.

What PulsAPI does not do, first. It has no SSL certificate monitoring and no Datadog integration. It does not host a public status page with email subscribers, so if your team or customers subscribe to an IsDown status page, PulsAPI does not replace that part. It does not read private Zendesk status for your tenant (its Microsoft 365 integration, on Business, does read your tenant's service health through Microsoft Graph). And at 2,463 services, its catalog is smaller than IsDown's; if a vendor you need is missing, the onboarding search has a request form, and requests are reviewed by hand.

What it does. Paid plans never meter monitors: Pro is $29 a month ($23 billed yearly) for as many vendors as you watch, and the free plan covers 3 vendors with unlimited email alerts. It watches individual components and regions, so you can follow S3 in us-east-1 without being paged for an unrelated AWS service. Pro adds Slack, Discord, Microsoft Teams and Google Chat, alert rules, maintenance windows, SLA reports with MTTR and P50/P95/P99 latency, CSV and PDF export, 90 days of history and an MCP server for AI agents. Business adds PagerDuty, Opsgenie, escalation policies, SSO and 13 months of history.

Two things set it apart from the other four. It can scan your GitHub repositories and propose the vendors your code actually depends on, which is a faster way to rebuild a monitor list than retyping it. And it maps vendors to the business capability they sit under, such as payments or login, so an alert says which part of your product is at risk. One behaviour to know before you compare alert timing: PulsAPI holds a status change for 5 minutes before it alerts, so a vendor flapping between states does not send you a stream of messages. It will often alert later than a tool that fires on the first change it sees, by design.

New accounts get a 30-day trial with Business features and no credit card, then drop to the free plan unless you upgrade. The full side-by-side is on the PulsAPI vs IsDown comparison.

Start with coverage, not catalog size. Write down your 20 most important vendors and search for each one in every tool you are considering. A catalog of 12,000 that is missing your payment processor is worse than one of 1,000 that has it.

Then match the tool to the job IsDown does for you today. If it is mainly status pages for employees or customers, look at StatusGator or stay. If it is alerts into PagerDuty, Opsgenie or Datadog, check which plan unlocks that destination in each tool, because it is rarely the entry plan. If it is a long vendor list and a team channel, quota pricing is what you are paying for, and unmetered or high-quota plans (PulsAPI, IncidentHub) cost the least. If you already pay for UptimeRobot and watch a handful of vendors, use what you have.

Whatever you choose, run it next to IsDown through at least one real vendor incident before you cancel. The checklist for that is in how to migrate from IsDown.

What is the best IsDown alternative? It depends on the job. StatusGator is closest in features, especially status pages. IncidentHub is cheapest at high quotas but has a smaller catalog. UptimeRobot suits small vendor lists if you already use it. PulsAPI suits long vendor lists, with unmetered monitors on paid plans and GitHub dependency discovery.

Is there a free IsDown alternative? Yes. IsDown has no free plan, but StatusGator (3 monitors, 10 notifications a month), IncidentHub (5 monitors with Slack and Discord) and PulsAPI (3 monitors, unlimited email alerts) all have permanent free plans. UptimeRobot's free plan does not include third-party monitoring.

Which IsDown alternative has the most services? StatusGator claims the largest catalog at 12,310+ services. IsDown lists 6,320+, UptimeRobot's feature uses IsDown's data at 6,000+, PulsAPI tracks 2,463 and IncidentHub 1,125+. Counting methods differ, so search for your own vendors.

Can I keep IsDown status pages if I switch? Only by keeping an IsDown plan or moving them to another status page tool. Status pages and subscriber lists do not transfer between these products, and PulsAPI does not host public status pages with subscribers.