Small tools I use every day, free and without an account. They run in your browser.
A live analog clock where the hand turns once a day, with 24 at the top and the part of the day already gone shaded. Highlight your eating window, sleep or work hours as colored bands. Minute and second hands, time zones, full screen, and a 12 to 24 hour and military time chart.
Work in focused blocks with short breaks in between. Start the classic 25/5 timer or pick any work and break length up to two hours.