LinkedIn Learning - Online training through LinkedIn's professional network.
SmallDevTools - Handy developer tools with a delightful interface
AWS Certified Solutions Arch. - AWS Certified Solutions Arch App allows you to access an extensive collection of more than 320 exam questions so you can prepare yourself for AWS exams.
Google Open Source - All of Googles open source projects under a single umbrella
CompTIA Security+ Pocket Prep - CompTIA Security+ Pocket Prep app comes up with features to help users in creating customized practice tests so they can practice for their upcoming exams right through their mobile phones.
whatdevsneed - This is whatdevsneed.