Alternatives to EssentialPIM for Linux with any license

Evolution

Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.

Free Open Source Linux BSD S/MIME GNOME OpenPGP
Calendar integration CalDAV Exchange Built-in RSS reader ... CardDAV Encrypted Email Integrated Spam Protection Multiple languages POP3 Support Reminders Support for WebDAV Add a feature

173 Like
Lightning Calendar

Organize your schedule and events in a calendar fully integrated with Thunderbird or Seamonkey email. .
- NOT a Personal Information Manager. timgray • May 2020
Free Open Source Mac Windows Linux Thunderbird SeaMonkey
CardDAV CalDAV Task Management Add a feature

173 Like
Remember The Milk

Take your tasks anywhere with this feature-packed application. See tasks located nearby, add and complete tasks on the go, organize upcoming tasks, and sync it all...

Freemium $ $ $ Mac Windows Linux Web Android ... iPhone Android Tablet iPad Blackberry 10
Support for Keyboard Shortcuts Clean design Full text search IFTTT integration ... Journal Recurring tasks To-Do management Natural Language Processing Smart add Task Management Todos Add a feature

350 Like
TreeSheets

A "hierarchical spreadsheet" that is a great replacement for spreadsheets, mind mappers, outliners, PIMs, text editors and small databases.

Free Open Source Mac Windows Linux
Hierarchical structure Freeform notes List management Nested Notes ... Notetaking Database Notetaking Outliner Spreadsheets Add a feature

83 Like
Org mode

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

Free Open Source Mac Windows Linux GNU Emacs
Customizable Emacs integration Web-Based Command line interface ... Export to HTML Extensible by Plugins/Extensions Hierarchical structure Hierarchical tagging Infinite hierarchical depth Lightweight Notetaking Outline mode Outliner Plain text file Portable Privacy focused Publishing Search by tags Tag based Task Management Todos Add a feature

87 Like
RedNotebook

RedNotebook is a graphical diary and journal helping you keep track of notes and thoughts. It includes a calendar navigation, customizable templates, export...

Free Open Source Mac Windows Linux PortableApps.com Xfce
Calendar view Auto-saving Journal Notetaking ... Outliner Add a feature

107 Like
Geary

Geary is an email application built around conversations, for the GNOME 3 desktop.

Free Open Source Linux Chrome OS BSD GNOME
Multiple Account support Gmail integration Support for IMAP SMTP Add a feature

85 Like
Task Coach

Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists. It is designed for composite tasks, and also offers effort tracking...

Free Open Source Mac Windows Linux BSD PortableApps.com
Task time tracking Portable Task Management Todos Add a feature

129 Like
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Restyaboard

Open source Trello-like kanban board. Based on Restya platform.

Freemium Open Source Linux Web Self-Hosted
Works Offline Chat Gantt-charts Support for IMAP ... Kanban boards Real time collaboration Web-Based Add a feature

101 Like
Todo.txt

Track your tasks and projects in a plain text file, todo.txt. A todo.txt is software and operating system agnostic; it's searchable, portable, lightweight and...

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet BSD iPad
Command line Command line interface Portable Task Management ... Todos Add a feature

59 Like