Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
PocketGuard - PocketGuard categorizes and organizes your expenses, monthly bills and subscriptions into clear, beautiful tabs and graphs, so you will always be on top of your finances.
UptimeRobot App - Web, SSL, ports & Cron-jobs monitoring
EveryDollar - Budgeting and expense tracking app
Cronitor - Monitor cron jobs, micro-services, daemons and almost anything else, no setup required. Easier cron troubleshooting and no more silent failures.
Goodbudget - A home budget app based on the envelope budget system. Available on the web, Android, and iPhone.