Uptime.com is a commercial monitoring platform aimed at teams that need breadth: many check types, many probe locations and a polished status-page product. SiteDownCheck is a small, free service for people who mostly need to know that a few URLs are up. If you are searching for an Uptime.com alternative, the useful question is how much monitoring you actually need.
Competitor details come from Uptime.com's own site at the time of writing (October 2026). It did not show prices on the page we read, so we do not quote any. Check their pricing page before you decide. Our details come from our pricing page.
What Uptime.com offers
According to its site, basic checks included in every plan cover SSL and certificate, TCP port, DNS, WHOIS and domain, ping, HTTPS, SMTP, IMAP, POP, SSH, UDP, FTPS, blacklist and malware checks. Advanced checks include API monitoring, transaction monitoring, page speed, webhook, group checks and heartbeat (cron) monitoring. It also lists real user monitoring, private locations for systems behind a firewall, and 80+ global monitoring points. Status pages can be public or private, with maintenance windows and subscriptions. It lists 20+ integrations and native iOS and Android apps. Whether there is a trial was not stated on the page we read.
SiteDownCheck covers a narrower slice: HTTP checks every 5 minutes on the free plan, keyword and JSON checks, SSL, domain and DNS-change alerts, heartbeat monitors, maintenance windows, a public status page and badges.
Side-by-side
| Uptime.com | SiteDownCheck | |
|---|---|---|
| Free plan | Not stated on the page we read; check their pricing | Yes: 3 monitors, 5-minute checks |
| Probe locations | 80+ per their site, plus private locations | One default location on the free plan |
| Transaction (multi-step) monitoring | Yes | No |
| Real user monitoring | Yes | No |
| API monitoring | Yes | Basic: HTTP, keyword and JSON checks |
| Protocol checks (SMTP, IMAP, FTPS and others) | Yes | No |
| Status page | Public and private, maintenance subscriptions | Public, 30-day history, maintenance windows |
| Phone and SMS alerts | Listed among alert channels | Not yet; planned for Pro |
| Mobile apps | Yes, per their site | No |
| Heartbeat monitoring | Yes | Yes, counts toward your 3 monitors |
Where Uptime.com is stronger
- Breadth. Protocol checks for mail servers, SSH, UDP and more, plus transaction monitoring, cover things an HTTP check never will.
- Locations and private probes. Many probe points help you tell a regional problem from a global one, and private locations let you check systems behind a firewall.
- Alerting reach. Phone, SMS, push, Teams and a mobile app suit on-call teams. Our SMS and phone alerts are only planned.
- Team-oriented status pages. Private pages and maintenance subscriptions suit B2B support.
- Support and track record. It is an established vendor with a sales and support structure behind it.
Where SiteDownCheck fits better
- Cost of entry. There is a permanent free plan with no card. You can try, and keep, a working monitor without a procurement conversation.
- Small and simple. Three monitors, one dashboard, no feature tour. If you manage a blog, a small shop or a few APIs, that is enough.
- Hygiene checks included. SSL expiry at 30, 14, 7 and 1 days, domain expiry and DNS or certificate change alerts come with the free plan.
- Low-noise failure rule. A single failed check does not alert. We re-check and only open an incident on a confirmed failure.
- Diagnostics beside the monitor. The HTTP status checker, DNS checker और outage root-cause finder are one click from an alert.
Who should choose what
Choose Uptime.com if you monitor mail or network services, need scripted user flows, want global probes with private locations, or run an on-call rotation that depends on phone and SMS.
Choose SiteDownCheck if you want a free monitor for a few public URLs plus expiry warnings and a status page, and you do not need those extras yet.
If you are unsure, start free and write down which alert you wished you had. The first time you want a flow check or a phone call, you have your answer. Synthetic vs real user monitoring explains the difference.
Migration steps
There is no importer between the two. Plan for manual re-creation.
- Export or list your checks from Uptime.com: URL, expected status or text, interval and alert contacts.
- Sort them. HTTP, keyword and SSL checks can move. Transaction, RUM and protocol checks cannot.
- Re-create the top three in uptime-monitor. Add a keyword check so a 200 error page is not counted as up.
- Move heartbeat checks to cron-monitoring and update the job's ping URL.
- Recreate your status page at status-page and point your support links to it.
- Run both in parallel for a week, compare incidents, then retire what you replaced.
Honest limitations of ours
One default check location, a 5-minute minimum interval, three monitors, no transaction or real user monitoring, no mobile app and no on-call scheduling. Pro is planned to add more monitors, faster checks and multi-region, with no price or date yet.
अगले कदम
- Start a free monitor on your main URL.
- Understand uptime percentages before comparing vendor claims.
- Create a status page for customers.
- Read uptime monitoring for small business.
- Check the pricing page for what is free and planned.
सामान्य प्रश्न
Is SiteDownCheck a replacement for Uptime.com?
Only for basic availability and expiry monitoring of a few public URLs. It does not offer transaction monitoring, real user monitoring, protocol checks or private probes.
Does SiteDownCheck have SMS or phone alerts?
Not yet. Free alerts go by email, Slack, Discord and webhook, and SMS is planned for Pro.
Can I import checks from Uptime.com?
No import tool exists. Checks are added by hand.
Does SiteDownCheck check from many locations?
No, one default location on the free plan. Multi-region is planned for Pro with no launch date.
Try SiteDownCheck free
3 monitors, 5-minute checks, email and webhook alerts and a public status page. No credit card.
मुफ़्त मॉनिटरिंग शुरू करेंOpinions here are our own; verify vendor details yourself. See our संपादकीय नीति और अस्वीकरण.