Open Source Windows Software filtered by 'Calendar View'

Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc.

On-premises file sync, universal access, integrated collaboration, real-time communication with privacy and data control focus.

Local-first, privacy-focused notebook supporting Markdown and Org mode, offline use, encrypted backup, extensible with plugins, and more.

Free multi-platform software for task management, time tracking, and personal project management. Seamless integration with Jira, GitHub, and GitLab.

End-to-end encrypted app for email, calendar, and contacts, requiring no personal data, with open source code and quantum-resistant security.

Open-source app tracking time on devices, maintaining privacy and versatility, with features like productivity insights, Pomodoro timers, and local data storage.

Open-source, privacy-focused workspace merging notes, tasks, project management, Kanban, Pomodoro timer, interactive whiteboard, and real-time collaboration.

The original trilium is transfered to this repo by its owner and the app continues to develop here as stated here: https://github.com/TriliumNext/Trilium

Manage complex projects with nested task breakdowns, multi-language support, XML storage, scheduling, and customizable printing via advanced formatting.

Transform data with an open-source interface using relational databases and Python engines. Collaborate in real-time with custom permissions for security.

Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.

TimeScribe lets you effortlessly start, stop, and pause your work time with just a click, ensuring a straightforward time tracking experience. The app provides an intuitive dashboard to monitor your daily activities, including breaks, and allows you to customize your weekly work...

Integrates enterprise resource planning, CRM, and more, eliminating the need for multiple software with open-source solutions developed in Python.

RedNotebook is a graphical diary and journal helping you keep track of notes and thoughts. It includes a calendar navigation, customizable templates, export functionality and word clouds. You can also format, tag and search your entries.

WeekToDo is a free and Open Source minimalist weekly planner. With WeekToDo you can start improving your productivity by defining and managing your week and your tasks in an easy and intuitive way.

acreom is an actionable personal knowledge base for developers. It helps developers ship faster by centralizing personal and team context in one place.

Experience Condution, a powerful yet incredibly simple check-list application that supports your needs from study, business, and life. Bring Condution with you across the Globe and let it be your second brain — so you can focus on living your best life.

A complete Getting Things Done (GTD) productivity system for desktop and mobile. Mind Like Water.

All you need in a team collaboration tool dedicated to small efficient teams. Chat, notes, drive, online collaborative edition, calendars, news, spaces, notifications...

TowDow is an open-source, cross-platform application designed for small and mid-sized teams to manage tasks, projects, and processes in one place. It allows you to create projects, assign tasks, set deadlines, and follow progress in real time across desktop and mobile devices.

BORG is a combination calendar and task tracking system. The calendar supports all sorts of appointments and also a simple todo list. The calendar functionality is similar to that of other PIMs, such as Microsoft Outlook, Mozilla Calendar, Palm Desktop, Yahoo Calendar, etc...

A simple program for managing daily annotations, attachments and attributes.

A reading companion powered by KOReader metadata — browse your library, highlights, annotations, and reading statistics from a web dashboard.

muCalendar is a lightweight, open-source desktop calendar application built for users who value privacy and simplicity. It brings your remote calendars — whether self-hosted or cloud-based — into a clean, native desktop experience.

An encrypted local cross-platform journaling app.