Challenger Accelerator

The leading non-equity startup accelerator in Estonia, Ukraine and Slovakia!


Every year we run acceleration programs in various verticals and locations around Europe.

Challenger Ideator

Empowering student innovators to turn ideas into reality

Challenger Green & Digital

Boosting startups in Green & Digital

Challenger Urban:Creative

Supporting teams developing innovative products or services for cities

Challenger AI

Boosting Digital & AI/ML startups

Challenger Diversity

Supporting diversity and helping innovative female-led ventures to succeed!

Our Track Record

Challenger is based on our 12-year track record of building & scaling innovative ventures


startups accelerated through our programs

1.3 Billion EUR

raised by startups we worked with


industry experts & investors in our network

Why Challenger?

Investors & customers 

Build connections with investors and customers.

0% equity taken

We are focused on 100% value-added with no equity taken.

Results & business-oriented

We work with founders who are busy building great products and want to invest their time into an acceleration program that helps them get results and grow.

From the blog

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