macOS is the operating system that powers every Mac. It lets you do things you simply can’t with other computers. That’s because it’s designed specifically for the hardware it runs on — and vice versa. macOS comes with an entire suite of beautifully designed apps. It works hand in hand with iCloud to keep photos, documents, and other stuff up to date on all your devices. It makes your Mac work like magic with your iPhone. And it’s been built from the ground up with privacy and security in mind.
macOS Mojave
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Simply powerful.

Featuring Dark Mode, new pro-inspired features, four new apps, and a redesigned Mac App Store.
Easy to Use When it’s simple to do everything, you can do anything.
On a Mac, everything is designed to work just the way you expect it to — from operating it with simple, intuitive gestures to asking Siri to find a file to having your apps automatically update themselves. Whatever you set out to do on a Mac, there’s much less to learn and that much more to accomplish.
Dark Mode adds a dramatic new look to your desktop and apps that puts the focus on your content. Dynamic Desktop makes your Mac even more beautiful with two time-shifting desktop pictures that match the time of day wherever you are. And Stacks keeps your desktop free of clutter by automatically organizing your files, images, documents, PDFs, and more into tidy groups.
MDB Viewer Plus is a bare-bones database application. It allows you to view, edit, and search through a Microsoft Access database file without having Access installed on the machine. It serves as a valuable substitute when you don't have Access available to you.
Pros
Straightforward design: Databases are one of the more complex file types that you might have to work on. This program uses a navigation system and icons that should be familiar enough to users of other Windows programs that learning how to perform the basic functions such as opening and searching a file are easy to perform, even for someone without a lot of database experience.
Tools Plus Usa
Good value: For a free program, this app offers significant value. Being able to open and edit MDB files without having to purchase Office is of considerable worth, especially considering how well the program appears to work.
Cons
Cluttered: Both the toolbar and the main viewing area of the app are quite cluttered. It looks very dated, without the clarity more common in newer software.
Installation: During the installation process, several questions come up trying to get you to install extra browser add-ons and tool bars. You do have the option to reject these installations, but it seems like a needless hassle.
Bottom Line
If you've ever needed to open an MDB file and don't have access on your machine, this is an effective solution to your problem. The software is a little dated and a little cumbersome, but ultimately it performs the tasks you ask it to do admirably. For software that is about functionality and not designed for any sort of entertainment purposes, those drawbacks aren't enough reason to keep away.