Nine is a very reliable email client designed to work with all of your accounts. The clean interface and the optional conversation view make reading and replying to email intuitive. One of the coolest features is the ability to customize the notification actions, including an incredibly useful "Mark as read" option. It isn't cheap, but it's only a one-time $14.99 charge for a much-improved email experience that also integrates calendar, contacts, notes, and tasks functionality.
AppsLib was created by Archos, and is the app marketplace for Android devices that couldn’t get Google certification, mainly tablets. It comes pre-installed on a number of devices from smaller manufacturers. There are almost 40,000 apps on offer, and each one has been certified as compatible with specific devices. They are categorized, and there’s even an adult section, which is PIN protected. You can also pay for apps using PayPal. Android App
File browsing is something everyone inevitably has (or wants) to do, so you might as well do it with a capable, fantastic file browser. Solid Explorer is pretty much as good as it gets in the file explorer apps realm. It features Material Design, archiving support, support for the most popular cloud services, and even some more power user stuff like FTP, SFPT, WebDav, and SMB/CIFS support. It looks great, it’s incredibly stable, and it just works well. There is a 14-day free trial with a $2.99 price tag at the end of it. This is, by far, the best file manager on Android for most people. Android App
The Amazon-owned ComiXology —the iTunes of digital comics—offers a near-perfect combination of store and comic book reader in its wonderful Comics app. The free app transforms your Android smartphone or tablet into a digital long box that houses and syncs your purchases across multiple devices. Even better, the new Comixology Unlimited service lets you devour an ever-expanding catalog of titles for just $5.99 per month. Once you have the app downloaded, you should make sure to read our feature on digital comic books you should read right now. New Droid Apps
Overall, YAATA is a pretty great alternative to both the messaging app included by default on your device and the apps on this list, especially if the visual design of Textra or QKSMS doesn’t do it for you. There’s a wide variety of options available on the free tier of YAATA, and even the paid tier only runs a cool one-time payment of $3.00. Overall, YAATA wasn’t our pick of the bunch, but it is a solid messaging application on Android. Definitely don’t count this one out. Droid Apps
Textra is an excellent alternative to Messages on Android. The app includes tons of visual customization options that you won't find with the stock messaging app, including custom contact colors, text bubble styles, and notification icons. Additionally, you get extra features such as text scheduling, the ability to blacklist contacts, and the option to rename group conversations. Textra also has excellent light and dark modes. Droid Apps
Mood Messenger is one of the youngest apps on our list. It doesn’t have a million and a half features, but that’s one of the nice things about it. Mood Messenger keeps things simple while still offering the key features you’ll want. Mood Messenger users can also send messages to each other without using SMS. The app is completely free with no in-app purchases. Droid App