Brendan Eich is a software engineer and technology executive best known as the creator of JavaScript and as the co-founder and CEO of Brave Software, the company behind the Brave browser and the Basic Attention Token. He also served as Mozilla’s CEO for a brief, controversial period in 2014.
Who Is Brendan Eich?
Brendan Eich was born in Pittsburgh, Pennsylvania, on July 4, 1961. He earned a bachelor’s degree in mathematics and computer science from Santa Clara University, then a master’s degree in computer science from the University of Illinois at Urbana-Champaign, which he completed around 1985-1986. He is married with five children and has studied piano since the 1970s, performing classical repertoire as an amateur musician.
Eich began his career as a software engineer at Silicon Graphics from 1985 to 1992, working on operating system and network code during a period when the company was an early advocate for making its code openly available to other developers, a practice that appears to have shaped his later commitment to open-source software. He then spent three years at MicroUnity Systems Engineering, writing code for microkernels and digital signal processors, before joining Netscape in April 1995.
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Brendan Eich’s Career and Contributions
At Netscape, Eich was initially asked to embed Scheme, an academic functional programming language, into the browser. Netscape’s leadership ultimately wanted something with Java-like syntax instead, so Eich built a language blending Scheme’s functional style, the object orientation of the Self programming language, and Java’s syntax, completing the work in just 10 days in May 1995. The language was first called Mocha, then renamed LiveScript for its public release, before finally becoming JavaScript, a name Eich has said Netscape management chose, in part to associate the new language with Java’s growing popularity.
JavaScript’s standardization moved to Ecma International in 1996, both to ensure a stable standard and to prevent competitors such as Microsoft from creating a proprietary fork that would undermine Netscape’s open-systems approach. The language is still officially known as ECMAScript, or ECMA-262. When Google later developed Dart as a proposed JavaScript alternative for its Chrome browser, Eich was an outspoken critic, and in 2015, Google confirmed it would not replace JavaScript with Dart in Chrome, according to EBSCO.
In 1998, Eich helped found the Mozilla project alongside Jamie Zawinski, launching mozilla.org to manage open-source contributions to Netscape’s source code. After AOL, which had acquired Netscape, shut down its browser unit in 2003, Eich helped establish the nonprofit Mozilla Foundation and served as chief architect from 2003 to 2005. When the foundation created the for-profit Mozilla Corporation in 2005, Eich became its Chief Technology Officer, a role he held until 2013, then CTO and SVP of Engineering from 2013 to 2014. On March 24, 2014, Eich became Mozilla’s CEO, but resigned within days after a report resurfaced a $1,000 donation he had made in support of California’s Proposition 8, a 2008 ballot initiative to ban same-sex marriage.
On May 28, 2015, Eich co-founded Brave Software with Brian Bondy and released a developer version of the Brave browser in January 2016. Brave blocks third-party trackers and ads by default and offers an opt-in rewards system built around the Basic Attention Token, which lets users earn tokens for viewing privacy-preserving ads while giving advertisers and publishers a new attribution model that does not depend on cross-site tracking.
BAT’s co-founders include Ankur Nandwani, whose broader crypto career is covered in our profile of Ankur Nandwani. Brave has since expanded to include a built-in Brave Wallet, supporting interactions with blockchain networks, including Ethereum, and providing users with a lower-friction path into DeFi and NFT applications, depending on region and product version.
Brendan Eich’s Views and Positions
Eich has said what made JavaScript powerful, despite being built in 10 days, was that it connected directly to the things web developers wanted to manipulate in the browser. He has also said that if he could redo those 10 days, he would not ask for more time, but would be more selective about which design suggestions he followed. Readers new to the wallet infrastructure Brave and similar browsers now have built-in can find the basics in our guide on Web3 NFT wallets for collectors.
On Brave’s mission, Eich has described the browser as built for people who care about both privacy and browsing speed, positioning its tracker and ad-blocking alongside its token-based rewards system as a package rather than separate features.
He has framed Brave’s advertising model as an attempt to realign incentives between users, advertisers, and publishers without relying on the surveillance-based tracking that defines most online advertising today.
Brendan Eich’s Net Worth in 2026
Brendan Eich’s net worth is estimated at $50 million, according to a single Instagram post that ranked him first among the wealthiest programming language creators, ahead of Ken Thompson, James Gosling, Anders Hejlsberg, and Bjarne Stroustrup. However, the source stated that this figure should only be treated as an estimate rather than a confirmed number.
EBSCO‘s biography notes that Eich benefited from two early IPOs, Silicon Graphics in 1986 and Netscape in 1995, both of which left him financially comfortable well before his later work at Mozilla and Brave, though neither event is tied to a specific dollar figure in that account.
Frequently Asked Questions
Need a refresher? Here are the questions readers most often ask about Brendan Eich.
What is Brendan Eich’s net worth?
Brendan Eich’s net worth is estimated at $50 million, based on a single ranking post that itself cautions its figures are approximations rather than confirmed data. No independent source reviewed for this profile provides a separate net worth estimate.
Did Brendan Eich create JavaScript in 10 days?
Eich built the first version of JavaScript, then called Mocha, in 10 days in May 1995 while working at Netscape, blending the functional style of Scheme, the object orientation of the Self programming language, and Java-like syntax at his employer’s request.
Why did Brendan Eich resign as Mozilla’s CEO?
Eich became Mozilla’s CEO on March 24, 2014, but resigned within days after renewed public attention to a $1,000 donation he made in 2008 supporting California’s Proposition 8, a ballot initiative to ban same-sex marriage. Mozilla publicly distanced itself from his position following the controversy.
What is Brave Browser and how does it relate to crypto?
Brave is a privacy-focused browser co-founded by Brendan Eich in 2015 that blocks trackers and ads by default. Its opt-in rewards system is built around the Basic Attention Token (BAT), letting users earn tokens for viewing privacy-preserving ads, and the browser includes a built-in Brave Wallet for interacting with blockchain networks such as Ethereum.
What is the Basic Attention Token (BAT)?
The Basic Attention Token, or BAT, is the token underlying Brave’s advertising and rewards model, allowing users to earn tokens for opted-in ad views while giving publishers and creators a token-based way to receive contributions. It was designed to align incentives among users, advertisers, and publishers without relying on cross-site tracking.
