Recently decided to launch MessageDuck: https://www.messageduck.com after working on a few side projects but never actually launching for many years. It is similar to Mailcharts and ReallyGoodEmail, but for SMS which Mailcharts has as well but the price is out of our range.
Basically it is a library of thousands of SMS messages to help marketers get the latest SMS data and launch their campaign in minutes instead of days. Currently earning $0 and incurring some cost of about less than $100 a month but overall it meets our own need. It was an internal tool we used but we decided to launch it to the open web and see if there was any demand for it. Currently it has all the features of a MVP and already works great for us but we are adding some new features every month as well.