Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.