Open Source Windows Countdown Timers
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Countdown Timers for Windows
View 558 business solutionsBrowse free open source Countdown Timers and projects for Windows below. Use the toggles on the left to filter open source Countdown Timers by OS, license, language, programming language, and project status.
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Pomatez
Stay Focused. Take a Break
Pomatez is a free, open-source productivity application that helps users manage work sessions and breaks through the Pomodoro technique. It provides customizable timers for alternating focused work periods with scheduled rest intervals. Users can adjust session durations, configure special breaks, and organize daily activities with a built-in task list. The application includes desktop notifications and optional voice assistance to announce important timer events. Its strict mode prevents users from pausing, skipping, or resetting active sessions, encouraging consistent work habits. Pomatez also offers full-screen break reminders, keyboard shortcuts, and system tray integration. Available for Windows, macOS, and Linux, it features dark mode, compact layouts, and automatic updates for a flexible time management experience. -
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Free Countdown Timer and Stopwatch Timer
A high resolution Countdown Timer and Stop Watch in .NET
A high resolution Countdown Timer and Stop Watch written in C# .NET that pop up a message box with user defined message and play user specified sound when time is up. It use a QueueTimer (via PInvoke) for high resolution timing and System.Timers.Timer for normal resolution. It also allow users to save, load and remove current state to/from a XML file. -
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SleepTimer
On-screen system suspend timer
A simple countdown timer to put the system to sleep. Similar to the Sleep function on TV sets. -
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Two programs, one in Java and one in Javascript, which display a configurable graphical countdown timer on a computer. Useful for testing situations and short-range anticipated events.
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WatchTheClock
Portable stopwatch and countdown timer for Windows
Portable stopwatch, countdown timer and alarm clock for Windows (.NET 4.0 required). See features below. WatchTheClock Changeset: v0.6 ------------- alarm clock progress state for countdowns additional window title support mail address v0.5 ------------- start buttons are default -> clicked when enter is pressed navigation through tabs with CTRL + TAB is now working on startup input fields on countdown tab select all text on focus via keyboard; to select all via mouse double click v0.4 ------------- small layout changes, to make it look nice in windows 7 v0.3 ------------- added multiple icon sizes added some error handling if .NET is missing v0.2 ------------- bring window to front if countdown time is up v0.1 ------------- initial version If you like this tool, please donate. Visit http://www.informatik-pc.de/blog/watchtheclock -
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Time_limit
A windowed/full-screen countdown timer.
A windowed / full-screen countdown timer. Colour and font size changes are used as warnings. Progress-bar gives a glance at the time stream. Three different modes are available: - time left; - time passed; - ordinary clock. When the time is over several possibilities are available: - to show the defined message; - to continue count the time; - to launch another application; - to close the count-down timer. Useful for speech, lecture or presentation timing. Colour / font / time limits can be changed using settings window and hot-keys. To change current time use the mouse wheel. By clicking on progress-bar, the timer mode is toggled. -
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MiniMax Timer
Customizable countdown timer
The MiniMax Timer is a simple timer application which, for now, only counts downward. It has the following customizable features: - always on top - fullscreen - timer font, text color and background color - display a customizable text when the timer ends - timer's size and location - timer control shortcuts The settings (positions, colors, sizes) are automatically saved upon exiting the program. -
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zTimer is a portable and tiny (59 KB) program which really helps to control run time of tasks and doing them more quickly. It shows countdown timer and two seconds counters on a small always-on-top window.
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Timepiece
Alarm Clock for Your Desktop
Timepiece is an alarm clock that runs on your desktop and includes a stopwatch and a countdown timer. All three timepieces can run simultaneously. You can choose your own sound file to start playing at the set alarm time. The sound for the countdown timer is also customisable. The alarm clock has a snooze feature. -
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Investor`s Clock
The Investor's Clock shows the time in different time zones.
The Investor's Clock shows the time in different time zones. This program was designed for Wall Street traders and investors. Inspired by the traditional trading hall setup where few clocks on the wall, each clock face shows current time in the investing center of certain region. My program is useful for persons, trading stocks from home or small office. With this program it is easy to control different time zones. Designed for Windows 7, 8.1, 10, 11 versions, only 64 bit. Don’t hesitate to ask any questions, make the suggestions or write the complaints, contact the developer by e-mail: Sergey@Bure.id.LV -
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Pomodoro
Simple to use Pomodoro timer.
Simple to use Pomodoro timer with features like sound notification, tray icon and customizable timings. Also available on Arch Linux Install: yay -S simple-pomodoro https://github.com/spikest3r/Pomodoro -
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Simple Timer Stopwatch
A simple timer stopwatch.
This is a simple timer stopwatch written in C++ with the Qt framework, without any extra features. A program for minimalists. -
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Desktop Timer
Desktop Timer is a countdown timer written on a cross-platform code.
Desktop Timer is a Pascal code developed using Lazarus, a cross-platform RAD IDE available for WIndows, Mac, and Ubuntu (Linux). The source code can be compiled on several platforms. -
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OpenAlive
Keep your PC active. Automatically.
OpenAlive prevents your Windows workstation from going idle by simulating subtle mouse movements and optional keystrokes at configurable intervals — so your status stays green and your screen stays on while you work. It runs on your schedule: active only during your work hours, with an automatic lunch-break pause, and a manual toggle anytime. Lives quietly in the system tray — no admin rights, no drivers, no physical jiggler — with a color-coded icon (Active / Inactive / Outside hours / Lunch). Also available as a portable .zip alongside the installer. Free and open source (GPLv3), zero telemetry — no network requests, nothing leaves your machine. Available in 8 languages: English, Español, Português (BR), Français, 日本語, 中文简体, 한국어, Kreyòl ayisyen. Single .exe, ~4 MB installed, ~5–15 MB RAM at idle. -
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Simple Countdown Timer & Stopwatch Timer
A simple timer that can be used for PowerPoint presentations.
Hotkeys: F1: About F5: Start/Pause, same as PPT play hotkey F6: Reset ESC/Alt+F4: Exit (can only be done when the window is in focus to avoid accidental closing) If you like it, Maybe you could By me a coffee ? https://bmc.link/funchan7 -
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Desk-Timer
A timer for the desktop.
Desk-Timer is a simple timer for the daily usage on the desktop. The main goal of Desk-Timer is to have a simple and easy to use timer, that provides nothing more than what it should do, while looking simple, cleaned up and neat. -
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EasyTimeManager
Effortlessly track and optimize your time with Easy Time Manager.
Introducing Easy Time Manager, the ultimate solution for boosting your productivity and efficiently managing your time. This powerful, yet user-friendly app is completely free and ad-free, allowing you to focus on what matters most – optimizing your daily activities. Key Features: Cost-Free and Ad-Free Experience With Easy Time Manager, you can enjoy all the features and benefits without any hidden costs or annoying ads. We believe in providing a seamless and uninterrupted time tracking experience for our users. Cross-Platform Functionality Whether you're working on your desktop, laptop, tablet, or smartphone, Easy Time Manager has got you covered. Our app is available on all major platforms, allowing you to seamlessly transition between devices and keep track of your time, no matter where you are. User-Friendly Interface We understand that time management can be challenging, which is why we've designed Easy Time Manager with a straightforward and intuitive interface. -
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Simple yet effective countdown timer application. Its dialog allows you to specify the countdown time in hours, minutes and seconds. When the countdown has finished it displays an alert window and plays a sound until pressing the 'OK' button.
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Simple Pomodoro Timer
A clean, minimalist Pomodoro timer for productivity and focus
A lightweight, easy-to-use Pomodoro Timer built with Python and Tkinter. This application helps boost productivity using the Pomodoro Technique - 25 minutes of focused work followed by 5-minute breaks. Key Features: • Clean, intuitive interface with visual timer display • Automatic switching between work (25 min) and break (5 min) sessions • Session counter to track completed Pomodoro cycles • Start, pause, and reset controls for flexibility • Desktop notifications when sessions complete -
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rims-arduino-library
Recirculation infusion mash system library for Arduino
This library implement RIMS controls for home brewers. For definition of a RIMS, see https://tinyurl.com/j3lyuyc For me, an Arduino micro controller + a LCD Keypad shield was cheaper and a lot more customizable than a commercial PID controller. So, with this library, a commercial PID controller is unnecessary. Automatic PID tuning toolkit is also included. Temperature can be read with a thermistor, a resistance temperature detector (RTD) or any custom temperature probe. Heater is controlled with pulse-width modulation (PWM) of a solid-state relay (SSR). Documentation : https://tinyurl.com/y7579v6a -
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The .NET ShutMan project is a shutdown manager. You can create a countdown-timer and the program shutdown your pc when the timer is expired (up to 36 hours)! Important: You need the .Net Framework 4.0!
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A D D Timer
A simple countdown timer
A D D Timer, a simple timer application for Windows that helps remind you when a set time is up. The application allows you to launch multiple instances with different titles and time periods that are based on settings passed to it from an XML file. -
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BitCrazy's Faucet-in-a-Box Mod
Mod of the original Faucet-in-a-Box faucet PHP script
Mod of the original Faucet-in-a-Box faucet PHP script (based on its revision 69). Includes pre-installed Anti-Bot Links 5.75, full support of user balances, countdown timer and some other improvements and cool features. ======================================== Minimum requirements: PHP 5.4.4+ (5.5 recommended) MySQL (5.6 recommended) ======================================== CHANGELOG { [F] - bugfixes, [+] - new features, [!] - known issues } Current release (version 7): [+]: CACert.pem updated to latest version. [+]: FaucetHub.php was replaced with native FaucetHub library! [+]: Faucet now has page "Currency rate", where you can see USD price of selected currency. [+]: Anti-Bot Links were updated to version 5.75 [F]: + various related fixes & small changes. [!]: Script has no support for FaucetHub's "last_status" code and "checkAddress()" fn (at least, now) -
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Catbell
Full featured crossplatform countdown timer
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A simple .NET console application. When run, it asks how long the timer should run for (or specify on the command line). When the timer hits zero, the PC speaker beeps continuously until you stop it (or a user defined time limit runs out).
