01Uptime Notifine Bot@uptime_notifine_botFreeA free, open-source uptime bot from the Notifine project: send /new with a URL and it checks the address about once a minute, messages you when the check fails and again when the site is healthy. No account, works in groups and forum topics.Website & server monitoringFreeWorks in groupsNo sign-upChecked Oct 2273 / 100ScoreOpen
02UptimeBot - Sites Monitoring@UptimeWebsiteBotFreeA one-developer monitoring bot: add a site from the menu, and it checks it every 5 minutes and tells you when the site stops working or returns an error, and when it is back. There is also a «Check Right Now» button. Free, no account.Website & server monitoringFreeNo sign-upFor developersChecked Oct 2261 / 100ScoreOpen
03Is it UP?@Is_it_UPBotFreeAn old open-source bot that answers «is this site up?» and can track a URL, messaging you when its state changes. Free and without an account, but the code has not changed since 2018, and any HTTP response, even an error page, counts as «up».Website & server monitoringFreeNo sign-upOpen sourceChecked Oct 2260 / 100ScoreOpen
04UptimeRobot@itrinity_ur_botSubscriptionThe official Telegram bot of UptimeRobot, a website and server uptime monitor. You create monitors on uptimerobot.com, and down, up, SSL and domain-expiry alerts arrive in a private chat, a group or a channel. Telegram alerts need a paid plan: the free plan does not include this integration.Website & server monitoringSubscriptionWorks in groupsWorks in channelsChecked Oct 2284 / 100ScoreOpen
05HetrixTools@hetrixtools_botFreemiumThe official Telegram bot of HetrixTools, an uptime, server and blacklist monitor: press Start, copy the chat ID into a HetrixTools contact list, and outage alerts arrive in Telegram, in a private chat or a channel. The free plan includes Telegram alerts, 15 uptime monitors with 1-minute checks and 15 server monitors.Website & server monitoringFreemiumWorks in channelsOfficialChecked Oct 2280 / 100ScoreOpen
06HealthchecksBot@HealthchecksBotFreemiumThe official Telegram bot of Healthchecks.io, an open-source service that watches cron jobs, backups and other scheduled tasks: when a job stops pinging its URL on time, the alert lands in a Telegram chat, group, channel or topic. The free Hobbyist plan monitors 20 jobs.Website & server monitoringFreemiumWorks in groupsWorks in channelsChecked Oct 2279 / 100ScoreOpen
07SStatusCake@StatusCake_botFreemiumThe Telegram bot of StatusCake, a website monitoring service: once you connect it in StatusCake's Integrations and add it to a contact group, failing and recovering tests alert you in Telegram. Works on the free plan, which includes 10 uptime monitors checked every 5 minutes.Website & server monitoringFreemiumTrial periodOfficialChecked Oct 2278 / 100ScoreOpen
08Oh Dear@OhDearAppBotSubscriptionThe official Telegram bot of Oh Dear, a paid monitoring service that checks uptime, SSL certificates, broken links, scheduled tasks, DNS and more: add the bot to a chat, paste the start command Oh Dear generates and pick which events to receive. Plans start at €49 a month after a 10-day free trial.Website & server monitoringSubscriptionTrial periodOfficialChecked Oct 2276 / 100ScoreOpen
09CronitorBot@CronitorBotFreemiumThe official Telegram bot of Cronitor, a monitoring service for cron jobs, heartbeats, websites and APIs: send /start@CronitorBot in a chat, group or forum topic, follow the magic link, and alerts from your monitors arrive there. Cronitor's free Hacker plan covers 5 monitors.Website & server monitoringFreemiumTrial periodWorks in groupsChecked Oct 2276 / 100ScoreOpen
10Check-Host@checkhostbotFreeThe bot of Check-Host.net, an online network diagnostics site: send /http with a site or /ping with a host and get the check result in the chat, with no account. It runs checks on request only and does not send alerts on its own.Website & server monitoringFreeNo sign-upOfficialChecked Oct 2269 / 100ScoreOpen