Zeplin - Collaboration app for UI designers & frontend developers
Mockaroo - A realistic data generator to test your app
Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
JSON Generator - Create mock and sample JSON using a powerful template syntax
ActiveWords - Auto correct on steroids
Softbuilder SB Data Generator - SB Data Generator is a simple and powerful tool to generate and populate selected tables or entire databases with realistic test data.