# Daniel Stenberg > Swedish software developer **Wikidata**: [Q42160379](https://www.wikidata.org/wiki/Q42160379) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Daniel_Stenberg) **Source**: https://4ort.xyz/entity/daniel-stenberg ## Summary Daniel Stenberg is a Swedish software developer and computer scientist best known as the creator and principal maintainer of the curl and libcurl open-source projects. His work has established foundational tools for internet data transfer used globally. ## Biography - **Born**: 1970-11-23 in Huddinge Municipality - **Nationality**: Sweden - **Education**: Not specified in source material - **Known for**: Creating the curl project - **Employer(s)**: Mozilla Foundation (2014–2018) - **Field(s)**: Software development, computer science ## Contributions Daniel Stenberg is the creator and primary maintainer of curl, a command-line tool and library for transferring data with URLs, first released in 1997. This open-source project has become essential for internet communication, supporting protocols like HTTP, HTTPS, FTP, and more. With over 10 billion downloads and usage in billions of devices and applications, curl serves as a backbone for countless systems including macOS, Linux distributions, and popular software. His work on libcurl provides a programming interface that enables seamless data transfer in applications worldwide, revolutionizing how software interacts with web services. Stenberg’s contributions have standardized cross-platform data transfer capabilities, influencing web standards and enabling efficient global communication infrastructure. ## FAQs ### Q: What is curl? A: Curl is a command-line tool and software library for transferring data using internet protocols like HTTP and FTP, created by Daniel Stenberg in 1997. ### Q: Why is Daniel Stenberg significant? A: He created curl, the most widely used open-source project for internet data transfer, essential for countless systems and applications globally. ### Q: Has Daniel Stenberg won major awards? A: Yes, he received the Polhem Prize (2017), Nordic Free Software Award (2009), and Gold Medal of the Royal Swedish Academy of Engineering Sciences (2025). ### Q: Where does he live? A: In Huddinge Municipality, Sweden, his birthplace and current residence. ## Why They Matter Daniel Stenberg’s work fundamentally reshaped internet communication infrastructure. By creating and maintaining curl for over 25 years, he provided a universal, free solution for data transfer that underpins modern web and application functionality. His project democratized secure, efficient internet access across platforms and industries, influencing developers and organizations worldwide. Without curl, many critical systems—from operating systems to fintech platforms—would lack reliable, standardized data handling capabilities, significantly slowing digital innovation and global connectivity. His long-term commitment to open-source collaboration has set benchmarks for sustainable, community-driven software development. ## Notable For - Creator and lifelong maintainer of curl (since 1997), the world’s most widely used internet data transfer tool - Recipient of the 2025 Gold Medal of the Royal Swedish Academy of Engineering Sciences - Honored with the 2017 Polhem Prize for engineering innovation - Pioneer of free software development, awarded the 2009 Nordic Free Software Award - Key contributor to Mozilla’s technology team (2014–2018) ## Body ### Early Life and Identity Daniel Stenberg was born on November 23, 1970, in Huddinge Municipality, Sweden. As a Swedish national, he resides in Huddinge and identifies as male. His native language is Swedish, though he works primarily in English. ### Core Technical Contributions Stenberg’s seminal creation, curl, launched in 1997 as a command-line tool for URL data transfer. It evolved into libcurl—a programming library enabling developers to integrate data transfer capabilities into applications. The project supports over 20 internet protocols and has surpassed 10 billion downloads, becoming a foundational component of major operating systems (e.g., Linux, macOS), web browsers, and enterprise software. ### Industry Recognition and Awards - **Polhem Prize (2017)**: Awarded for engineering excellence, specifically honoring curl’s impact. - **Nordic Free Software Award (2009)**: Recognized for leadership in free software development. - **Gold Medal of the Royal Swedish Academy of Engineering Sciences (2025)**: Highest national honor for engineering achievements. ### Professional Affiliations - **Mozilla Foundation**: Employed as a developer from 2014 to 2018. - **Current Status**: Independent developer maintaining curl and related projects. ### Digital Presence Stenberg actively engages via platforms like Twitter (@bagder), GitHub (@bagder), Mastodon (@bagder@mastodon.social), and YouTube (channel ID UCD5eL38hFtSLiVFP9cCUJEA). His website (daniel.haxx.se) and blog serve as hubs for project updates and technical discourse. ### Linguistic and Cultural Influence Aliases include "bagder" (primary handle) and Korean translations (망누스 다니엘 스텐베리). His work is documented across 10 Wikipedia languages, underscoring global impact. ## References 1. [About Daniel](https://daniel.haxx.se/about.html) 2. [Årets Polhemspris till Daniel Stenberg](http://www.polhemspriset.se/aktuellt/arets-polhemspris-till-daniel-stenberg/) 3. [Nordic Free Software Award. FSCONS. 2009](https://fscons.org/2009/award/) 4. [IVAs Guldmedalj 2025: Daniel Stenberg – arkitekten bakom en global kommunikationsryggrad. Royal Swedish Academy of Engineering Sciences. 2025](https://www.iva.se/publicerat/ivas-guldmedalj-2025-daniel-stenberg--arkitekten-bakom-en-global-kommunikationsryggrad/) 5. Virtual International Authority File 6. YouTube API