Here are some of my favorite apps on AppExchange. They are all powerful tools and most of them are free!
Manage your role hierarchy with ease! Now you can drag and drop your way through any hierarchy modifications. Draggin’ Role is a free application that allows you to view and manipulate users AND roles from a single Custom Tab.
The Permissioner dramatically reduces the time involved with assigning and revoking permission sets assignments to multiple users. Using a simple interface, administrators can select one or more permission sets to assign to one or more users at a time.
Slash administration times and have fun doing it! Drag and drop management of Roles, Territories, Users, Public Groups, Queues, and Record Ownership all from a powerful, Flash-based console. A ‘must have’ for any System or Delegated Administrator.
DemandTools is an enterprise capable suite of data quality modules to control, standardize, verify, deduplicate, import & generally manipulate Salesforce and/or Force.com data. More than just duplicates removal, DemandTools is administrator productivity.
Ever wish you could run reports on the fields you have in salesforce? Take a Field Trip! This utility lets you analyze the fields of any object, including what percentage of the records (or a subset of your records) have that field populated.
Salesforce CRM Dashboards
Your one stop shop for GREAT example dashboards. Includes dashboards for Executives, Reps, Sales, Support and more. Checkout the documentation for details.
DupeCatcher, Real Time Deduplication
DupeCatcher enables Salesforce users to identify, block and dedupe leads, accounts, and contacts in real-time at the point-of-entry. Retain full control of the identification and merging process, eliminating any fear of loss while cleansing data.
Easily create and deliver customized documents, presentations and reports using Word, PowerPoint, Excel, HTML email and PDF forms from standard & custom objects. Generate quotes, proposals, account plans, invoices, contracts, letters & more
The ultimate Group management tool for any Chatter admin!
Inline Account Hierarchy
The Inline Account Hierarchy package contains a custom Visualforce component that displays the Account hierarchy as a collapsible tree. The component my be included directly into you own Visualforce pages or added to the standard account detail page.
‘Graphics Pack’ contains hundreds of images / icons that can be used in salesforce applications for tabs, image formulas, and Visualforce pages
Rollup Helper aggregates any Salesforce data in minutes. No coding required. Save time & money & unlock your data! Supports SUM, MAX/MIN, Formula-based Count, and Text Rollups. Rollup information using lookup relationships and through hierarchies.
Hope this helps.