Stagetimer is a cloud-based, remote-controlled countdown and event timing platform that runs entirely in a browser or through native desktop apps for Mac and Windows, letting you create, schedule, start, pause, reset, and share full-screen timers and agendas with presenters and teams without downloads or installs. You can set up simple countdowns, count-ups, or clocks in 12h/24h formats, link or automate sequences of timers, and use features like wrap-up colors, chimes, and customizable messaging to display cues or alerts to talent on stage or in virtual events. Stagetimer lets you share unique viewer, controller, agenda, and moderator links across devices so production staff and presenters stay synchronized, and it includes tools to import event rundowns, send real-time messages to screens, and integrate with production workflows via APIs or companion modules for OBS, vMix, Zoom, Stream Deck, and other tools.