Challenger Accelerator
The leading non-equity startup accelerator in Estonia, Ukraine and Slovakia!
Programs
Every year we run acceleration programs in various verticals and locations around Europe.
Challenger Ideator
Supporting teams developing innovative products or services for the City of Košice
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-based 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
1,150+
startups accelerated through our programs
1.3 Billion EUR
raised by startups we worked with
350+
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
Challenger Ideator
Do you have an idea for solving a city’s challenges? Challenger Ideator…
Read moreThe winner of the Challenger Green & Digital 2022 is DEVS!
The grand finale of the Challenger Green & Digital acceleration program, …
Read more