Hourglass is the most advanced simple countdown timer for Windows. Just enter a time in just about any format, and hit Enter.
Marvin incorporates principles from behavioral psychology to help you beat procrastination, feel in control and finish your todo list. Marvin is specifically designed to help you get your tasks done and not just store them.
Amazing Marvin Features
100% Free Meditation App that will improve your Mental wellbeing with the help of Guided Meditations, Breathing Exercises, Mindfulness Practices, Relaxing Sounds, and more.
Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux. The key features are built-in screenshot capture, activity detection. Integrations with jira, redmine, trello, gitlab, other task managers via plugins.
Free Alarm Clock, free version of Hot Alarm Clock, is a portable and full-featured and user-friendly computer alarm clock and program-launcher for Windows in 23 languages.
Analytics for programmers using open-source text editor plugins. The service itself is not open source, only the plugins.
AMP WinOFF is an utility designed to schedule the shut down of Windows computers, with several shut down modes and fully configurable. Some of its features are:
AMP WinOFF FeaturesDiscontinued
According to the official website, it's no longer update and the last version was on 2010
SafeEyes is an application that tries to protect your eyes from eye strain (asthenopia) by reminding you to take breaks while you're working long hours at the computer. It was created as a free and open source Linux alternative for EyeLeo, a Windows-only app.
Safe Eyes Linux Features
All the timers I tested were too complex for my taste. I decided to write one that was dead simple, so you could run it, type in a time and hit enter. The aim of SnapTimer is to get out of the way and help you be productive.