Email clients that support Gmail aren't exactly rare, but the vast majority of them use the IMAP protocol to retrieve and manage your messages, which means they can't take advantage of Gmail-specific features such as inbox categorization, labels, and synchronized signatures.

Mimestream goes about it differently — it uses the Gmail API, allowing it to provide most, though not quite all, of the features you are familiar with from Google's mail client. It's also worth noting that the app is written in Swift, so it will integrate very well with macOS and provide a much smoother experience than, for instance, an Electron-based app.

BusyCal is an award-winning desktop calendar that combines personal productivity features for individuals with powerful calendar sharing capabilities for families and workgroups. Its unique features include a non-modal Info Panel for easier data entry; To Dos that display in the calendar and auto-forward until completed; repeating To Dos; customizable calendar views including a List view and scrolling Month and Week views; adjustable font styles and sizes, live weather feeds, moon phases, graphics, sticky notes and more. And when you first launch BusyCal, all of your iCal data is instantly imported. BusyCal automatically syncs with iCal, iPhone, iPad, iPod Touch, and other apps and devices that sync with MobileMe or Sync Services. If you later decide to switch back to iCal, all of your calendar data will be current.

BusyContacts is a contact manager for macOS that makes creating, finding, and managing contacts faster and more efficient. It brings to contact management the same power, flexibility, and sharing capabilities that BusyCal users have enjoyed with their calendars. What's more, BusyContacts integrates seamlessly with BusyCal, forming a flexible, easy-to-use CRM solution that works the way you do.

CleanMyMac X is all-in-one package to awesomize your Mac. It cleans megatons of junk and makes your computer run faster. Just like it did on day one. CleanMyMac X chases junk in all corners of your macOS. It cleans unneeded files, like outdated caches, broken downloads, logs, and useless localizations. You can remove tons of clutter that lurks in iTunes, Mail, Photos, and even locate gigabytes of large hidden files. Mac cleaning tools in CleanMyMac X will cut the extra weight in seconds.

Redesigned from the ground up, Final Cut Pro combines revolutionary video editing with powerful media organization and incredible performance to let you create at the speed of thought.

CleanMyMac X is an user friendly Mac app that comes with a stylish design and helps you detect the junk files, but also user and system cache / log files, broken preferences or login items, apps that have universal binaries (you can remove the executable that is not suitable for your architecture), language files (you can keep only the one you actually employ).