We have tried every Slack live chat tool that we've been able to come across, and Talkus is by far the best. We came across them when we were looking to add the ability for people to text us for support. We then realized they not only provided Live Chat and Texting options, but also Facebook and Twitter and it integrated right with Slack. We had been using another Live Chat solution (Chatra) that simply posted a link to Slack on new chats, but we prefer the entire chat experience to be within Slack because we don't need another tool and our entire team can take part of the conversations.
We also had been comparing Smooch while we were evaluating Talkus, but found Talkus was a much smoother solution that we could start using right away rather than having to add custom code or bots to handle some of the functionality we needed.
Support has been wonderful to work with. They were helpful and quick to respond. And because they use Talkus for their support, it was nice to be able to have conversations with their support via LiveChat, that then moved to email, that could then move back to Live Chat.
I would definitely recommend trying Talkus if you're looking for live chat. The free trial was easy to set up, and the feature set is the best we've come across. Even if you don't use Slack, you can quickly set up a free Slack team at www.slack.com (free forever) and then set up a trial Talkus account. The entire process only takes a couple minutes.
We wanted to add the ability for our clients to text us for support. We were so pleased to find Talkus that not only allowed clients to text us, but also could replace our Live Chat solution and give us integrations with Facebook and Twitter as well. Plus it was all in Slack. Talkus was a great find.