Calendar Lock PEA is an open-source secure desktop calendar that supports day, week, and month views. It's compatible with multiple cloud services and encrypts calendars to ensure security. The tool requires no installation, and calendars are never stored locally or in the cloud unencrypted.

One of the standout features of Calendar Lock PEA is that it ensures maximum privacy and security for your personal information. Your calendars are never stored unencrypted on your disk or in the cloud. Instead, they exist as plain text only in the memory (RAM). This is an exceptional security measure, making it virtually impossible for anyone to gain access to your data without your authorization.
The software is compatible with many iCalendar applications, making it an excellent choice for users of all skillsets. It is also platform-independent and built as Open Source, giving users a peace of mind knowing that they can use the software without any reservations. The best part is that there is no need to go through an installation or registration process – all you need is a Java Runtime Environment.
To provide added protection against custom-hardware attacks, Calendar Lock PEA uses authenticated encryption (EAX mode) and a memory-hard key derivation function (Catena). This gives you extra confidence that your data is secure regardless of the situation. This program is designed to go the extra mile to protect your privacy and provide peace of mind when using the software.
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