Personal Information Manager (PIM) Apps
When working with several different people, places, events, documents, and other miscellaneous information types, it can become almost impossible to manage without a method of organization. That’s where the personal information management software on this page comes in.
Whether dedicated PIM software such as Evolution and Cozy, or software with extensive personal information management features such as Microsoft Office Outlook, there are many options to help you structure the complex web of relationships and information that we must manage in both our personal and professional lives.
Laverna
Discontinued
The project is dead: the developer had issues with synchronization and multiple devices, so he decided to focus on other projects. Some users on GitHub forked the project and created a new app named 
Encryptic.
Laverna is a JavaScript note taking application with Markdown editor and encryption support. Consider it like open source alternative to 
Evernote.
Microsoft Office Outlook
Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.
TiddlyWiki
TiddlyWiki is a highly customizable notewiki for capturing, organising and sharing complex information.
Evolution
Evolution is the official personal information manager and workgroup information management tool for GNOME.
TagSpaces
TagSpaces is an open source personal data manager.It helps you organize and browse your files on every platform.Cross-platform file tagging and file finding
Cozy
Choose simplicity, get Cozy.We all have a life and a digital life. Cozy gathers them. In your Cozy, you have all your personal data: pictures, health, bank, holidays, accessible only by you. Welcome to your new digital home.
DEVONthink
DEVONthink is a solution to the digital age conundrum. It is your second brain, the one and only database for all your digital files, be they PDFs, emails, Word docs or even multimedia files.
iCloud
Store email, contacts, calendars, photos, music, books, apps and more in the cloud and access them on all your devices.
EssentialPIM
The powerful, full-featured Personal Information Manager for Windows offering Email, Synchronization, Portability, Network support, Android and iOS versions.
AllMyNotes Organizer
AllMyNotes Organizer is a multi-functional hierarchical information manager for Windows. Store all your Notes in virtual folders in one file!
Cloudron
Cloudron is a complete solution for managing apps & users on your own server. Easily deploy production ready apps from the Cloudron App Store and keep them automatically up-to-date.
GTDNext
Online task management app built by GTD enthusiasts for GTD enthusiasts.Outline style interface supports unlimited levels of sub-projects and tasks. 100% GTD compliant.
MyTetra
MyTetra is open source and cross platform personal manager for information accumulation. It is powerful program for data memorization and structuring notes.
iTools
iTools is the most efficient & easy-controlled sync & management software for your iPad, iPhone, iPod touch on your PC.
myBase
myBase is a unique free-form database software that allows entry of unstructured text, webpages, images, documents, emails and even arbitrary files without regard to length or...
Virtuter
Discontinued
Official website/service unavailable.
Create your own virtual social media card which you can share with your friends and let them discover and connect to your other social profiles.
EagleFiler
EagleFiler makes managing your information easy. It lets you archive and search mail, Web pages, PDF files, word processing documents, images, and more.
Kontact - KOrganizer
It provides management of events and tasks, alarm notification, web export, network transparent handling of data, group scheduling, import and export of calendar files and more.
gSyncit
gSyncit™ is a Microsoft Outlook add-in that allows for the synchronization of Outlook calendars, contacts, notes, and tasks with your Google account.
Ultra Recall
"Ultra Recall is personal information, knowledge, and document organizer software for Microsoft Windows.
Incollector
Discontinued
The project is no longer developed since 2012 and the official website is not available anymore. The Linux version is no longer downloadable, but last Windows version, 1.2, can be still downloaded from Wayback Machine.
Incollector is an application to collect various kinds of information (like notes, conversation logs, quotes, serial numbers, source code, web addresses, words).