"Complete vector drawing program to make brochures, organigrams..."
As you should have already worked out just from its name, SmartDraw is a complete drawing program with which any person can easily create organigrams, brochures, documents, presentations and much more.
SmartDraw has automatic formatting so it draws for you, 70 different kinds of visuals, it integrates with most Microsoft Office products like PowerPoint, Word, Project Manager, etc, has various print options, you can create your own customized templates, it has a useful autosave function, hundreds of lines and shapes to choose from, alignment and rotation tools, tables, you can add photos and images, etc.
Also, on the official SmartDraw website you can buy image collection libraries with more than 30,000 symbols and examples. Each library is oriented towards a specific theme: business, software design, electricity, mechanics, geography and maps, science, mathematics, etc. This drawing program is very easy to download, install and then use, through its friendly and intuitive user interface. You don't need any technical experience at all to get the most out of it.