FourSight
Multi-region uptime monitoring with 4-region consensus, 8 check types & status pages. Alerts via email, Slack, webhook & SMS. Free plan — commercial use OK.
A startup from the United States.
Multi-region uptime monitoring with 4-region consensus, 8 check types & status pages. Alerts via email, Slack, webhook & SMS. Free plan — commercial use OK.
A startup from the United States.
This page is designed to help you find out whether FourSight is good and if it is the right choice for you.
FourSight is multi-region uptime monitoring built so that a page only fires when something is actually down.
Every check runs from four regions - US, Canada, Europe and APAC - and uses quorum-based consensus to confirm an outage from more than one region before alerting. That is how FourSight avoids the false alerts that train teams to ignore their monitor.
Eight monitor types are available. HTTP checks support expected status codes, headers, response-body validation and custom timeouts. Keyword checks verify a page does or does not contain specific text, catching defacements and broken deploys. SSL monitoring warns at 30, 14 and 7 days before expiry. Domain-expiry tracking uses RDAP with alerts at 90, 60, 30 and 10 days. DNS monitoring flags records that drift from expected values. Ping checks measure TCP latency and packet loss, port checks cover TCP and UDP with banner detection and send/expect regex, and heartbeat monitoring gives each cron job, backup script or scheduled task a unique ping URL - if the ping does not arrive within its interval plus a grace period, FourSight opens an incident.
Alerts go out by email, Slack, HMAC-SHA256-signed webhooks and SMS, with escalation policies, scheduled maintenance windows, auto-created incidents with severity levels, team roles and branded status pages.
The free plan covers up to 10 HTTP and ping monitors at 5-minute intervals from all four regions, with commercial use allowed. Paid tiers run Starter $16, Growth $40, Pro $80 and Scale $160 per month, with 20% off annual billing.
Listed in
Developers, indie hackers, agencies and small ops teams who need monitoring they can trust without an enterprise budget.
Two groups in particular: agencies watching a portfolio of client sites, who need branded status pages and per-client separation; and bootstrappers and small teams who have outgrown a free tier elsewhere but do not want to jump to enterprise pricing for what is fundamentally uptime checking.
The heartbeat monitors also suit anyone running cron jobs, backup scripts or scheduled tasks that fail silently.
Quorum-based, multi-region confirmation before anyone gets paged.
Every check runs from four regions - US, Canada, Europe and APAC - and an outage has to be confirmed from more than one of them before FourSight alerts you. A single flaky probe in one region does not wake anybody up. That is the whole design goal: a page should mean something is genuinely down, because a monitor that cries wolf is a monitor your team learns to ignore.
The free tier is unusually complete for that model - 10 monitors at 5-minute intervals from all four regions, with commercial use allowed.
We have collected here some useful links to help you find out if FourSight is good.
Check the traffic stats of FourSight on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of FourSight on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of FourSight's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of FourSight on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about FourSight on Reddit. This can help you find out how popualr the product is and what people think about it.
Do you know an article comparing FourSight to other products?
Suggest a link to a post with product alternatives.
Is FourSight good? This is an informative page that will help you find out. Moreover, you can review and discuss FourSight here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.
