In an April 4, 2016 Datamation post,  Cynthia Harvey lists 100 Open Source Replacements for Expensive Applications (25 per page.) In some cases, the costs  of the expensive applications are “tens of thousands of dollars or more”.  The categories cover a wide range of business, educational, recreational  and social activities. Each page has useful comments, Q&A and additional open source suggestions. The categories are:

Accounting

Audio Recording/Editing

Business Intelligence

Business Process Management

CAD

Customer Relationship Management

Database

Desktop Publishing

Development Tools

E-mail/Collaboration/Groupware

Enterprise Resource Planning (ERP)

Foreign Language

Graphics/Drawing

Mathematics

Music

Office Productivity

Operating System

PDF Tools

Point of Sale (POS)

Project Management

Reporting

Screenplay Writing

Unified Threat Management (UTM) Appliances

Video Editing Tools

Web Site Design

 

See http://www.datamation.com/open-source/open-source-replacements-for-expensive-applications-1.html for the details and links to more of Cynthia’s blogs.