I rarely write any reviews, but I just had to write one for zeroin.

It's a great tool for people who know exactly how to leverage it and have decent amount of knowledge about lead generation. A lot of people rely on databases for generating leads without realizing that databases are often outdated and cause a lot of harm for your email servers too. Zeroin on the other hand finds the email in real-time, which ensures great deliverability as well as safety of your email infrastructure too.

Honestly I love everything about it except it's a bit buggy and slow, which is acceptable since it is still in it's early stage.

Based on my experience in the industry, I can guarantee this tool will become one of the top choices for sales/marketing folks or anyone looking to do lead generation in the next 3-5 years. As more and more people are realizing that databases are pretty much useless and nothing beats real-time lead generation. There are very few established players in the market and I am sure if the team sticks around for another 3-5 years, they will be one of them too.