Karl Lehenbauer (born April 5, 1958) was the founder of NeoSoft in the early 1990s, which was the first Internet Service Provider in the southern United States as well as the first to offer cable modem service in Houston, Texas, among other technological milestones. NeoSoft was later sold to Internet America in 1999. Lehenbauer also wrote the Internet (socket) capabilities of the Tcl programming language.
Lehenbauer has been contributing to the development of Internet software and protocols since 1986. Lehenbauer is the co-creator of the TclX Tcl extension, much of which has now been incorporated into Tcl. Lehenbauer served as the CTO of Superconnect, an enterprise cable/telecom monitoring software company.
Lehenbauer was the CTO of FlightAware, an aviation data and flight tracking company, from 2005 to 2021. [1]
Lehenbauer founded or is a major contributor to the following Internet software projects:
Lehenbauer lives in Houston, Texas with his wife and two daughters. He is an avid philanthropist, cyclist, and musician .
The Java Naming and Directory Interface (JNDI) is a Java API for a directory service that allows Java software clients to discover and look up data and resources via a name. Like all Java APIs that interface with host systems, JNDI is independent of the underlying implementation. Additionally, it specifies a service provider interface (SPI) that allows directory service implementations to be plugged into the framework. The information looked up via JNDI may be supplied by a server, a flat file, or a database; the choice is up to the implementation used.
Free and Open source Software Developers' European Meeting (FOSDEM) is a non-commercial, volunteer-organized European event centered on free and open-source software development. It is aimed at developers and anyone interested in the free and open-source software movement. It aims to enable developers to meet and to promote the awareness and use of free and open-source software.
In computing, a solution stack or software stack is a set of software subsystems or components needed to create a complete platform such that no additional software is needed to support applications. Applications are said to "run on" or "run on top of" the resulting platform.
The Mozilla application framework is a collection of cross-platform software components that make up the Mozilla applications. It was originally known as XPFE, an abbreviation of cross-platform front end. It was also known as XPToolkit. To avoid confusion, it is now referred to as the Mozilla application framework.
Zimbra Collaboration, formerly known as the Zimbra Collaboration Suite (ZCS) before 2019, is a collaborative software suite that includes an email server and a web client.
Tim Howes is a software engineer, entrepreneur and author. He is the co-creator of the Lightweight Directory Access Protocol (LDAP), the Internet standard for accessing directory servers. He co-founded enterprise software company Opsware, internet browser company Rockmelt, and children's education company, Know Yourself. He has co-authored two books, several Internet RFCs, and holds several patents.
FlightAware is an American multi-national technology company that provides real-time, historical, and predictive flight tracking data and products. As of 2019, it is the world's largest flight tracking platform, with a network of over 32,000 ADS-B ground stations in 200 countries. FlightAware also provides aviation data and predicted ETAs to airlines, airport operators, and software developers. FlightAware is a subsidiary of Collins Aerospace, with headquarters in Eleven Greenway Plaza in Houston, Texas, and sales offices in New York City, Austin (Texas), Singapore, and London.
Daniel Baker is an American businessman. Baker is the founder and CEO of FlightAware, a worldwide flight data and tracking company. In the 1990s, he was a principal of distributed.net, which pioneered Internet distributed computing. Baker was the head of the systems department at NeoSoft, the first Internet provider in Texas during the early 1990s. He was also a founder and Vice President of Superconnect, an enterprise cable/telecom monitoring software company.
The Dial-up Wide-Area Network Game Operation, better known by the acronym DWANGO, was an early online gaming service based in the United States. Launched in 1994, it was originally known for its compatibility with Doom, for which it functioned as a matchmaking service for online multiplayer. The service also supported various other titles, including other id Software games such as Doom II and Heretic as well as titles from other companies like Duke Nukem 3D, Blood, and Shadow Warrior from 3D Realms.
WSO2 LLC is an open-source technology provider founded in 2005. It delivers software and cloud solutions that provide foundational technologies for application development and identity and access management (IAM). This represents an expansion upon its original focus on integrating application programming interfaces (APIs), applications, and web services locally and across the Internet. In 2024, the company was taken private by EQT's fund, EQT Private Capital Asia.
tkWWW is an early, now discontinued web browser and WYSIWYG HTML editor written by Joseph Wang at MIT as part of Project Athena and the Globewide Network Academy project. The browser was based on the Tcl language and the Tk (toolkit) extension but did not achieve broad user-acceptance or market share, although it was included in many Linux distributions by default. Joseph Wang wanted tkWWW to become a replacement for r r n and to become a "swiss army knife" of networked computing.
FastCGI is a binary protocol for interfacing interactive programs with a web server. It is a variation on the earlier Common Gateway Interface (CGI). FastCGI's main aim is to reduce the overhead related to interfacing between web server and CGI programs, allowing a server to handle more web page requests per unit of time.
Nexor Limited is a privately held company based in Nottingham, providing products and services to safeguard government, defence and critical national infrastructure computer systems. It was originally known as X-Tel Services Limited.
Tcl is a high-level, general-purpose, interpreted, dynamic programming language. It was designed with the goal of being very simple but powerful. Tcl casts everything into the mold of a command, even programming constructs like variable assignment and procedure definition. Tcl supports multiple programming paradigms, including object-oriented, imperative, functional, and procedural styles.
The following outline is provided as an overview of and topical guide to web design and web development, two very related fields:
Log4Shell (CVE-2021-44228) is a zero-day vulnerability in Log4j, a popular Java logging framework, involving arbitrary code execution. The vulnerability had existed unnoticed since 2013 and was privately disclosed to the Apache Software Foundation, of which Log4j is a project, by Chen Zhaojun of Alibaba Cloud's security team on 24 November 2021. Before an official CVE identifier was made available on 10 December 2021, the vulnerability circulated with the name "Log4Shell", given by Free Wortley of the LunaSec team, which was initially used to track the issue online. Apache gave Log4Shell a CVSS severity rating of 10, the highest available score. The exploit was simple to execute and is estimated to have had the potential to affect hundreds of millions of devices.