The following is a list of personal information managers (PIMs) and online organizers.
Applications
PIM application Platform(s) Software license Notes 3D Topicscape Windows organizes information into 3D landscapes Calendar macOS Included with macOS Outlook Calendar on Outlook.com Web Has a freeware offline client, Calendar (Windows) Gubb Web CintaNotes Windows organizes information as notes, grouped using tags eM Client Windows Personal information manager, Email client, Calendaring software Evernote macOS, Windows, Web, Android Evolution Linux, Unix, GNOME Included with GNOME Google Calendar Web GroupWise Linux, macOS, Windows, Web IBM Notes Linux, macOS, Windows Joplin Linux, macOS, Microsoft Windows, Android, iOS Note taking application organised as notebooks. Can import and export from Evernote Kontact Linux, Windows, Unix, macOS, KDE Included with KDE Leo Linux, Windows, macOS Python-scriptable folding editor/IDE organized around multiple views (clones) of underlying text spread across files. Inspired by literate programming and similar to org-mode. Lightning Linux, Windows, macOS, others Addon for the Thunderbird e-mail client Microsoft Outlook Windows, macOS mobile PhoneTools Windows MyInfo Windows Free form personal information manager Notion Cross-platform Obsidian Cross-platform Personal Knowledge Base OneNote Windows, macOS, Web, Android, Windows Phone Notes manager org-mode Cross-platform Integrates with Emacs BBDB for contact management support, web browsers for hyperlink storing support. Free iPhone and Android apps available (Orgzly, MobileOrg and Beorg) Personal Knowbase Windows Freeform note-taking organizer. Portable. Planz Windows Provides a single, integrative document-like view of personal information as an overlay to the user's file system. Remember the Milk Web Tabbles Windows Tagging and auto-tagging of files, emails and bookmarks. Tag-sharing for files on shared-drives or in the Cloud. TagSpaces Cross-platform Offline application for PC, smartphone or tablet. Personal "wiki" for project tracking and storage of information. Taskwarrior Linux, semi-cross-platform (Windows Subsystem for Linux, Cygwin) Time and task management tool with command-line interface. Things macOS Task management and scheduling TiddlyWiki Cross-platform Single HTML file application used directly in browser that facilitates content reuse. Tinderbox macOS TopXNotes macOS Hybrid personal note and information organizer Treasuremytext Cross-platform Archiving personal messages Whizfolders Windows Hybrid Note-taking software and outliner Windows Contacts Windows Included with Windows 7, 8 and 10 Wrike Web Yahoo! Calendar Web Yojimbo macOS "Personal information manager" Zim Cross-platform Graphical text editor designed to maintain a collection of locally stored wiki-pages. SuperMemo Windows Spaced repetition, Incremental reading, Task management and more. TheBrain Cross-platform Personal knowledge base that uses a dynamic graphical interface that maps hierarchical and network relationships. Like a Knowledge Graph.
Discontinued applications
PIM application Platform(s) Software license Notes askSam DOS, Windows Free form database Backpack Web Todo list and calendar Chandler Linux, OS X, Windows Free form approach based on Lotus Agenda ClarisOrganizer macOS organized Events, Tasks, Notes, Contacts Ecco Pro Windows organizes information via full power outline and tag assignments. (Tags can contain text, numeric, or date data. Date data automatically mapped to calendar.) Google Notebook Web deprecated by Google Docs, Google Keep Haystack all operating systems with POSIX and Java Hula Linux Replaced by Bongo project IBM Lotus Organizer Windows 2003–2013 ideaList DOS, Windows, Mac Free form database Lotus Agenda DOS deprecated by IBM Lotus Organizer Meeting Maker Linux, OS X, Solaris Microsoft Entourage OS X deprecated by Microsoft Outlook for Mac MORE, GrandView Classic Mac OS, DOS 1986–1990 Mozilla Calendar Project Linux, BSD UNIX, OpenSolaris, Solaris, OS X, Windows, OS/2 deprecated by Lightning Mozilla Sunbird Linux, BSD UNIX, OpenSolaris, Solaris, OS X, Windows, OS/2 deprecated by Lightning Now Up-to-Date & Contact Mac OS, Windows Event, Task and Contact Organizer Palm Desktop Mac OS, Windows Plaxo Web 2002-2017 Sidekick DOS, Windows 1983–1999
See also Comparisons Comparison of email clients Comparison of file managers Comparison of note-taking software Comparison of reference management software Comparison of text editors Comparison of wiki software Comparison of word processors
Lists List of outliners Comparison of project management software List of text editors List of wiki software