Reviews and Comparison Guides

Watch in-depth video reviews and walkthroughs of two products offered by AppSumo in December 2018 — PromoRepublic and Shorby.

In this OptinMonster review, we'll examine the key features of the tool and highlight 6 ups and 3 downs of one of the most popular list building plugins in the market.

I've been a user of Sendinblue, Mailchimp, and ConvertKit for years now. On and off, I was testing and trying their features for managing our email marketing efforts at 99signals and Startup Cafe Digital, my digital marketing agency. So armed with my own experience and knowledge of these three platforms, here's my in-depth Sendinblue vs Mailchimp vs ConvertKit review!

Systeme.io is an all-in-one marketing platform for online entrepreneurs. In this in-depth systeme.io review, you'll learn about its key features, ease of use, customer support, and pricing plans. By the end of this review, you'll know whether or not you should use systeme.io to grow your business.

I think we'll all agree that invoicing can be a pain! It can be complicated, intimidating, and can waste a lot of productive time...

Email marketing is no monkey business. Or is it? Founded in 2001 by Ben Chestnut and Dan Kurzius, MailChimp with its loveable banana-loving mascot has quickly become one of the most widely-used email marketing services across the world.

How confident are you that your month-end close numbers are 100% accurate before the board starts asking questions? In large enterprises, the financial close is...

What if you could secure links, brand mentions, and even interviews from thousands of publishers with just a few clicks? This is precisely the solution SearchEye brings to the table. Check out this in-depth review of SearchEye to learn about its key features, how it works, and pricing options.

Stop wasting time on bad AI results. Our Pretty Prompt review and tutorial shows you how to master AI prompting with this exclusive AppSumo lifetime deal.

SEO PowerSuite is unlike any other product we have reviewed here at 99signals. In the past, we've covered popular SEO tools such as Semrush, Ahrefs, and Serpstat which are cloud-based and follow a monthly subscription model.