Kollect

Collect emails & phone numbers from inbox and comments

Bootstrap

Simple and flexible HTML, CSS, and JS for popular UI components and interactions

Simple, responsive one-page site creator.

Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.

Perfect widgets for your website: surveys, email opt-in forms, contact forms, popups, follow, share buttons and live chats - all in one place!

Hello Bar, the simplest way to grow your email list. Have your opt-in live in minutes. No developer required.

LimeSurvey: the Online-Umfrage Tool - Open-Source Suryeys

Customer feedback, public roadmap & product changelog

Optimize conversion rates, increase lead-to-close ratio, and resell leads easily. Includes complete WordPress integration.

OptinMonster helps to convert abandoning website visitors into subscribers and customers.

Add pop-ups to your customersâ journey at Dashlyí ½í²£

Turn 15% more visitors into clients, in 10 minutes, with the most effective email ever!

The easy way to ask people to join your email list

Opt-in form to help you grow your web subscriptions

Collect emails within your content í ½í³¬

Embeddable lead generation forms for Medium

Widgets to spread your blog posts like í ½í´¥ wildfire.

Recover abandoning visitors and turn them into customers