Rainlendar
Kimmo Pekkola (Rainy) • Customization
Rainlendar is a free and highly convenient calendar-organizer-reminder application designed to offer rich functionality while consuming minimal system resources. It provides a compact interface that displays not only the days of the month but also a to-do list, neatly marked by dates.
Distinguished by its small footprint and extreme frugality with system resources, Rainlendar supports customizable skins and transparency, allowing the calendar to merge seamlessly with your desktop wallpaper. It’s an ideal tool for organizing your daily life with ease of use and setup.
In This Post
Expert Tips
Customizing Rainlendar’s Appearance with Skins
- Right-click on any Rainlendar window on your desktop and select Options.
- Navigate to the Skins tab in the options dialog.
- Choose from the available skins or install new ones by unzipping them into the Rainlendar’s Skins-folder (e.g., C:\Program Files\Rainlendar\Skins).
- Click Apply or OK to see the changes immediately. You can also mix and match elements from different skins.
Reason To Do This: Customizing skins allows you to personalize Rainlendar to perfectly match your desktop aesthetic, making it a more integrated and visually pleasing part of your workspace without compromising functionality.
Setting Up Event and Task Reminders
- To create a new event or task, double-click on a date in the calendar or right-click on the event/task list and choose New Event or New Task.
- In the editor, fill in the details, including the date, time, and description.
- To set a reminder, go to the Alarm section within the event/task editor.
- Configure the notification type (e.g., pop-up message, sound signal) and the lead time for the alarm. You can also snooze alarms if needed.
Reason To Do This: Effective reminders are crucial for staying organized and ensuring you don’t miss important appointments or deadlines. Rainlendar‘s flexible alarm system helps you manage your schedule proactively.
Enabling Portable Mode for On-the-Go Use
- Install Rainlendar normally on a computer.
- Copy the entire contents of the Rainlendar program folder to your USB drive or desired portable location.
- In the same folder where the Rainlendar.exe (or equivalent executable) is located on your USB drive, create an empty text file named rainlendar2.ini.
- Launch Rainlendar from the USB drive. It will now store its settings and data within its program folder, making it fully portable.
Reason To Do This: Portable mode allows you to carry Rainlendar and all your calendar data on a USB stick, enabling you to access and manage your schedule from any computer without leaving traces on the host system.
Download Rainlendar
File size: 44.7 MB
OS support: Windows, macOS
Windows
Download Rainlendar – x32 Lite
Download Rainlendar – x64 Lite
macOS
Key Features
- Compact Organizer Display: Rainlendar efficiently displays not only the days of the month but also integrates a to-do list, compactly marked by dates, ensuring all your important information is readily visible on your desktop.
- Stylish and Discreet Design: The application boasts a small size and extreme frugality with system resources, making it unobtrusive. It supports various skins and transparency, allowing the calendar to blend perfectly with your desktop wallpaper for a personalized look.
- Easy Event Entry: With a single click on a specific date, you can effortlessly add an unlimited number of notes and events. Rainlendar automatically changes the date icon to visually indicate that an event is scheduled for that day.
- Comprehensive Task Management (ToDo List): Beyond events, Rainlendar includes an additional task manager for note-taking, which can be hidden or displayed as needed. This helps in keeping your tasks organized and easily accessible.
- Reminder Functions with Alarms: The software features a robust reminder function that utilizes pop-up messages. Users can set notifications for any task, including custom sound signals, to ensure important deadlines are never missed.
- iCalendar Format Compatibility: Rainlendar stores all its tasks and events in the standard iCalendar format (RFC2445), which facilitates easy exchange of information and synchronization with other calendar programs and services.
- Multi-Platform Support: The application is designed to work across major operating systems, including Windows, macOS, and Linux, ensuring a consistent experience and easy migration of data between platforms.
Tech Specs
| Software Name | Rainlendar |
|---|---|
| Version | 2.24.1 Build 185 |
| License | Freeware |
| File Size | 44.7 MB |
| OS Support | Windows, macOS |
| Language | Multi-language (over 50 languages) |
| Developer | Kimmo Pekkola (Rainy) |
| Homepage | https://www.rainlendar.net/ |
| Changelogurl | https://www.rainlendar.net/#changelog |
| Last Updated | May 15, 2026 |
Setup Instructions
Installation Steps
- Click the download button above to get the installer for your operating system (Windows or macOS).
- Locate the downloaded file (e.g., .exe for Windows or .dmg for macOS) and double-click to run the installer.
- Follow the on-screen installation wizard to complete the setup process. For macOS, drag the application to your Applications folder.
- Launch Rainlendar from your Start Menu or Applications folder to begin organizing your events and tasks.
Compatibility: For Windows, if upgrading from a 32-bit to a 64-bit version, it is advised to uninstall the old version first.
Fix Common Problems
- Issue: Installation fails or program doesn’t start → Solution: Ensure your antivirus or security software is not blocking the installer. Try running the installer as an administrator on Windows.
- Issue: Calendar language is incorrect → Solution: Right-click on the calendar, go to Options (gear icon), and select your desired language from the language selection menu.
Questions & Answers
Is Rainlendar a free application?
Rainlendar offers a freemium model. The Lite version is available for free and provides basic functionality, while the Pro version is a paid offering that includes advanced features such as synchronization with online calendars and Outlook.
Can I customize the appearance of Rainlendar?
Yes, Rainlendar is highly customizable. It supports various skins and transparency options, allowing you to change its look and feel to match your desktop theme or personal preferences. You can also mix and match different skin elements.
Does Rainlendar support synchronization with other calendar services?
Yes, Rainlendar stores its data in the standard iCalendar format, which allows for easy exchange of information with other calendar programs. The Pro version specifically offers advanced synchronization capabilities with services like Google Calendar, Outlook, and CalDAV servers.
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