Talkie.io is described as 'Free Click to Call. Receive web calls from your site free. Talkie is a free service to communicate with your customers visiting your website. Always free' and is a Customer Support Tool in the Business & Commerce category. There are more than 50 alternatives to Talkie.io for a variety of platforms, including Online / Web-based, iPhone, Android, Windows and Mac. The best alternative is Whereby, which is free. Other great apps like Talkie.io are tawk.to (Freemium), Bitrix24 (Freemium), Asterisk (Free, Open Source) and Chatwoot (Freemium, Open Source).
Intercom shows you who is using your product (the user's region, browser, local time etc.) and makes it easy to personally communicate with them through targeted, behavior-driven email and in-app messages.
Twilio is a web-service API that lets you use your existing web languages and skills to build voice and SMS applications. We focus on building a simple, powerful, pay-as-you-go communications platform so that you can focus on what you do best.