WP Rocket - WP Rocket offers a caching plugin for Wordpress.
Twicca - Twicca is a Twitter client for Android that is simply awesome. Features: * Notification
Yoast - Yoast offers plugins to improve SEO and optimize web sites and blogs.
Tweedle App - Notion is nice but sometimes all you need is an app like Tweedle.
Wordfence - Comprehensive security plugin for WordPress.
HootSuite - Enhance your social media management with Hootsuite, the leading social media dashboard. Manage multiple networks and profiles and measure your campaign results.