Do You Even List? - Auto updating Twitter list of people you interact with most
E-goi - Email Marketing companies, SMS Marketing, software email marketing.
Listr - Listr lets you explore some of the best lists on Twitter, curated across your favorite categories.
Octopush - Octopush is a company providing technology-based communication solutions, including SMS, Web solutions, and Email APIs.
Vicariously.io - Create Twitter lists based on the follows of other users
SendSMSGate - ✅Send SMS Bulk and 📨📨📨 Service SMS and Viber ads all over the world. 💰Cheap rices, round-the-clock support and direct contracts with mobile operators.