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

Electron - Build cross platform desktop apps with web technologies

Sleeknote - Set up lead capture forms on your website in minutes. No coding required. Sync your new email leads with your favorite email service provider. Try for free.

Tuemilio - Email forms and referral waiting lists for indie makers

Poptin - Create engaging and high converting website pop ups and contact forms in minutes. With Poptin, you get access to a feature-packed conversion rate optimization toolkit that converts more website visitors into email subscribers, leads, and customers.

Startup Toolkit - Interactive how-to guides to launch your startup