Pavel Baudis defeats the Vienna virus, and he and Eduard Kucera establish the ALWIL cooperative in Prague to distribute and sell their newly created software.

Following the fall of Communism after the Velvet Revolution of 1989, Pavel and Eduard break off from the rest of the cooperative, establishing ALWIL as a company.

Ondrej Vlcek, now the CEO, joins Alwil as a software developer.

After refusing an offer to be acquired, Alwil instead licenses its Avast antivirus to McAfee, and watches its global distribution grow rapidly.

Avast makes the defining decision to change the traditional antivirus business model and offers a fully featured, free antivirus to all.

Within 30 months of going free, Avast is used by over 1 million people around the world.

The number of people using Avast continues to grow exponentially, doubling twice in one year, reaching 20 million.

Vincent Steckler is appointed CEO of Avast.

Summit Partners comes on board as an investor. Alwil is rebranded as Avast to match the name of our iconic software.

Avast expands into business security, focusing on the SMB market.

Avast Free Mobile Security becomes the best-rated security app on Google Play. Avast Free Antivirus is the most downloaded software on Download.com

Avast's mobile family apps hits the 1,000,000 subscriber milestone through mobile carrier partnerships.

CVC Capital Partners becomes a strategic investor. Our mobile products reach the 100 million download milestone faster than any other mobile security tools in Google Play history.

Avast opens its new Prague headquarters, bringing Silicon Valley style to the Czech Republic.

Avast acquires fellow Czech-based cybersecurity giant AVG, doubling our total number of users and bringing in new talent and technologies. The acquisition gives Avast the largest and most advanced threat detection network, based on our massive user base, and further diversifies our product portfolio, geographic base, and revenue streams.

All versions of Avast antivirus protect against WannaCry, BadRabbit and NotPetya ransomware as well as Emotet crypto-mining attacks, without requiring a single product update. Avast reaches $811M in adjusted billings. Avast acquires Piriform, bringing our total active users to over 435 million.

In May 2018, Avast is listed on the London Stock Exchange.

Ondrej Vlcek is appointed CEO.

In 2020, Avast entered the FTSE 100 index, which tracks the stocks of the largest firms traded on the London Stock Exchange.