TgGrow - Bot for Giveaways in Telegram.
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Botsman - Free platform to develop, test and monitor Telegram bots
Monkey Test It - Primate powered algorithms that scan your site for common bugs and SEO mistakes.
Karmabot for Telegram - Free bot for tracking performance in chats
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.