The best alternatives to Hall Monitor are Monitorbook, Buffer for Mac, and Pulse. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Pulse is a friendly, developer-focused monitoring solution for your sites and Linux servers. It provides painless log analysis, a full API suite, and supports alerts via email, SMS, Slack, Discord & webhooks.
Pingrr allows you to receive a notification when a job doesn't complete or run when expected. You simply add a call to Pingrr after your job has run. Pingrr will detect if the state of that job has changed and notify you via Email, SMS Message and Slack
👀 kwatch is an open source tool that helps you monitor all changes in your Kubernetes(K8s) cluster, detects crashes in your running apps in realtime, and publishes notifications to your channels (Slack, Discord, etc.) instantly