Microsoft acquired and shut down this entrepreneur's app, but now he has raised funds for an unofficial successor.

• Christian Reber, co-founder of Wunderlist, has secured funding for a new app called Superlist, which he developed with four other entrepreneurs, including two of his Wunderlist colleagues.
• In 2015, Microsoft acquired Wunderlist from Reber for a reported sum between $100 million and $200 million, only to shut it down four years later.
• Earlier this year, CNBC reported that Reber felt "really unhappy" and "annoyed" after the Wunderlist acquisition.

In 2015, German entrepreneur Christian Reber sold his to-do list app Wunderlist to Microsoft for a reported sum between $100 million and $200 million, only to have the U.S. tech giant shut it down four years later.

He has recently secured funding for a new app called Superlist, which he has established with four other entrepreneurs, including two of his Wunderlist co-founders.

Earlier this year, Reber expressed his unhappiness and annoyance to CNBC about the Wunderlist acquisition, stating that the app never became the product he had envisioned.

In 2021, he launched Superlist, a "passion project" that he describes as the "unofficial successor to Wunderlist."

The Superlist app is a task and project management tool designed to facilitate collaboration in a hybrid work environment. It is currently in the second phase of its release cycle.

According to Reber, who spoke to CNBC earlier this year, the goal was to create the de facto standard application for collaborating on personal projects and business endeavors. He explained that there are already enterprise products like Asana and Trello, as well as personal to-do list apps like Things and To Do, but what was needed was a more comprehensive solution.

He stated that he felt that the bridge between both options was not fully captured, as he found either option to be either overly cluttered software designed for project managers or highly personalized to-do apps that made collaboration difficult.

Superlist is a tool that assists users in managing projects with a team of one to 200 individuals.

The company, based in Berlin, secured 10 million euros ($11 million) in a seed funding round led by EQT Ventures, bringing its total investment to 13.5 million euros.

EQT Ventures partner Ted Persson stated that the global productivity management software market is projected to reach $102.98 billion by 2027, providing an opportunity for a tool that focuses on the challenges of the modern workplace and harnesses team members' individuality.

Superlist announced plans to expand its team from 20 to 40 members by the end of 2022, with a focus on hiring developers, designers, and product leads.

Besides Superlist, Reber has also founded a Microsoft PowerPoint rival called Pitch. The four-year-old company, with approximately 160 employees, has raised around $130 million and was recently valued at $600 million.

According to Reber, raising funding for technology companies is currently easy because there is an abundance of money available. As a frequent founder, he believes that this is the best time to raise funds.