doogiePIM - A Personal Information Manager that is encrypted and locally stored.
History Search - History Search remembers what's on all those websites you visit so you can find them again.
EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.
Microsoft Web Activities - Microsoft's new extension bringing timeline to Chrome
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Ruin My Search History - Ruin your Google search history with a single click