Information management software 

Create knowledge base substantiated on any category of documents. An optimal tool for categorizing, processing and finding articles, documents and web pages which allows user to keep documents systemized, to add notes and attachments.

The best PIM ever... but needs replacement since it is no longer developped by its authors.

Organize information the way you want. From simple to-do lists to complex collaborative projects. Saves you time as you quickly outline projects and edit tasks in place (no extra windows). Employ visual SQL task filters, searches and reminders. PIM for Windows.

Ultra Recall is personal information / knowledge / document management software for Microsoft Windows.

It helps you easily capture, organize, and recall all of your electronic documents and information across all the applications that you use.

Chandler is an interpersonal information manager that adapts to your changing needs.