Internet Explorer
Internet Explorer (IE) was once the world’s most widely used web browser. For years, it came pre-installed on Windows computers, making it the default way millions of people went online. At its peak, IE controlled more than 90% of the browser market and played a defining role in the early growth of the Internet.
Today, Internet Explorer is officially discontinued and has been replaced by Microsoft Edge. But its legacy remains important—both for its role in popularizing the web and as a reminder of how quickly technology evolves. In this guide, we’ll explore IE’s history, features, rise, decline, and lasting impact.
What Is Internet Explorer?
Internet Explorer (IE) was Microsoft’s flagship web browser, first released in 1995 as part of the Windows 95 Plus! pack. For nearly two decades, it came pre-installed on Windows operating systems, making it the default browser for millions of users worldwide.
At its height in the early 2000s, Internet Explorer held more than 90% of the global browser market share, dominating what became known as the “browser wars.” Its deep integration with Windows helped it spread quickly, and for many people, IE was their very first gateway to the Internet.
Over time, however, Internet Explorer became known for being slow, insecure, and less compatible with modern web standards. Microsoft gradually phased it out, releasing Microsoft Edge in 2015 as its successor. By June 2022, Microsoft officially ended support for Internet Explorer, cementing its status as a legacy browser with a place in Internet history.
The Rise of Internet Explorer
When Microsoft launched Internet Explorer 1.0 in 1995, it entered a fast-growing market dominated by Netscape Navigator. By bundling IE directly into Windows, Microsoft gave its browser a massive distribution advantage. Users didn’t need to install anything—it was already on their computers. This move helped Internet Explorer gain momentum almost immediately.
By the late 1990s, IE had overtaken Netscape in what became known as the “browser wars.” Versions like Internet Explorer 4 and 5 introduced new features that pushed web development forward, including support for CSS, scripting, and multimedia integration. Microsoft’s strategy of tying IE tightly to Windows meant that it was the default choice for businesses, schools, and home users alike.
At its peak in the early 2000s, Internet Explorer commanded more than 90% of the global browser market share. It became the standard way people accessed the Internet—whether for checking email, browsing news sites, or exploring the early days of e-commerce. For millions of first-time Internet users, IE wasn’t just a browser—it was the Internet itself.
Key Features of Internet Explorer (in Its Time)
While modern browsers have surpassed it, Internet Explorer introduced many features that were innovative for their time. These tools helped define how people interacted with the web in the late 1990s and early 2000s.
ActiveX Controls
IE supported ActiveX, a Microsoft framework that allowed websites to run applications inside the browser. This made it possible to use web-based tools for video, games, and enterprise software. However, it later became infamous for security risks.
Integration with Windows
Because IE was deeply tied into the Windows operating system, users could launch it quickly, use it for file browsing, and rely on consistent updates through Windows Update.
Favorites and Toolbars
IE popularized the use of Favorites (bookmarks) and customizable toolbars, making it easier for users to save and organize frequently visited sites.
Tabbed Browsing
Although introduced later (in Internet Explorer 7), tabbed browsing was a game-changer, allowing users to keep multiple pages open in a single window—something now taken for granted.
Enterprise Compatibility
IE became the default browser for many corporate intranets and business applications, cementing its role in the workplace. Even long after its decline, many organizations continued using IE for legacy software support.
Security and Compatibility Challenges
For all its early success, Internet Explorer became infamous for its security problems and compatibility issues. As the web evolved, IE struggled to keep up, and its weaknesses became more apparent.
Security Vulnerabilities
Internet Explorer’s reliance on ActiveX controls and deep integration with Windows made it a frequent target for hackers. Malicious websites could exploit these features to install spyware, malware, or viruses on users’ computers. Microsoft regularly released patches, but new exploits appeared constantly.
Poor Standards Compliance
IE often lagged behind in supporting modern web standards. Websites built for Internet Explorer sometimes didn’t work correctly in other browsers, and newer sites often broke in IE because it failed to adopt updated coding practices quickly.
Slow Performance
As Firefox and later Chrome entered the market, users noticed that Internet Explorer felt slower and less responsive. Heavy web applications, multimedia content, and modern design elements exposed IE’s outdated engine.
Damaged Reputation
By the mid-2000s, Internet Explorer had gained a reputation for being insecure and unreliable. This reputation lingered for years, even after Microsoft released improved versions like IE9 and IE11.
The Decline of Internet Explorer
After dominating the browser market for nearly a decade, Internet Explorer’s decline began in the mid-2000s. Competitors like Mozilla Firefox and Google Chrome exposed IE’s shortcomings and quickly won over frustrated users.
The Rise of Firefox
In 2004, Mozilla Firefox launched as a faster, more secure alternative. It introduced features like better tab management, add-ons, and stronger adherence to web standards. Many users and developers began abandoning IE in favor of Firefox.
The Arrival of Chrome
Google launched Chrome in 2008, and its combination of speed, simplicity, and constant updates accelerated IE’s downfall. Chrome quickly overtook IE as the dominant browser worldwide.
Struggles to Modernize
Microsoft released new versions like IE7 through IE11, but they often felt too little, too late. While competitors were innovating rapidly, IE lagged behind and struggled to shake off its poor reputation.
Official End of Support
By the 2010s, Internet Explorer was mostly used for legacy enterprise applications rather than everyday browsing. In June 2022, Microsoft officially ended support for Internet Explorer, urging users to switch to Microsoft Edge instead.
Once a global giant, Internet Explorer became a legacy product, remembered more for its decline than its early dominance.
Internet Explorer vs. Modern Browsers
Comparing Internet Explorer to today’s browsers highlights just how far the web has come. While IE was once innovative, modern browsers like Chrome, Firefox, Safari, and Microsoft Edge far surpass it in speed, features, and security.
Speed and Performance
Modern browsers use advanced rendering engines and better memory management, making them much faster than IE. Websites that crawled in Internet Explorer now load almost instantly elsewhere.
Extensions and Customization
Today’s browsers offer vast extension libraries, giving users add-ons for security, productivity, and entertainment. Internet Explorer had limited support, which left it inflexible compared to Chrome or Firefox.
Privacy and Security Tools
Modern browsers feature tracking prevention, sandboxing, HTTPS upgrades, and frequent updates. Internet Explorer, by contrast, was slower to patch vulnerabilities and lacked robust built-in protections.
Mobile Compatibility
IE was built for the desktop era and never adapted well to smartphones or tablets. Today’s browsers are designed for cross-device syncing and mobile-first web experiences.
In every major category—speed, customization, security, and compatibility—Internet Explorer fell behind, paving the way for its retirement.
Microsoft Edge as Its Successor
When it became clear that Internet Explorer could no longer keep up, Microsoft introduced a new browser: Microsoft Edge. First launched in 2015, Edge was designed to be faster, more secure, and more compatible with modern web standards.
The first version of Edge used Microsoft’s proprietary engine, but in 2020 it was rebuilt on the Chromium platform—the same open-source project that powers Google Chrome. This gave Edge:
- Full compatibility with Chrome extensions
- Improved speed and performance
- Stronger security and stability
Edge also introduced tools that IE never offered, like Collections for saving research, vertical tabs, built-in shopping tools, and integrated Microsoft 365 support. It’s deeply integrated into Windows 10 and 11, making it the natural replacement for Internet Explorer.
For organizations that still rely on legacy apps, Edge includes IE Mode, allowing older websites designed for Internet Explorer to run inside Edge. This feature ensures businesses can transition without losing access to critical systems.
In short, Microsoft Edge is the true successor to Internet Explorer, carrying Microsoft’s browser legacy into the modern era.
Why Internet Explorer Still Matters Today
Although Internet Explorer is no longer supported, it remains an important part of Internet history. For millions of people, IE was their first browser—their introduction to email, online shopping, and social media. Its role in shaping the way people experienced the web can’t be overstated.
In the business world, many older applications were built specifically for Internet Explorer. Even today, some organizations continue to rely on those tools. To support this need, Microsoft built IE Mode into Microsoft Edge, allowing companies to run legacy apps while moving forward with a modern browser.
From its dominance in the browser wars to its eventual decline, Internet Explorer’s story illustrates how quickly technology changes—and how even the most powerful software must evolve or fade away.
Final Reflection: The Legacy of Internet Explorer
Internet Explorer may be gone, but its impact on the web is undeniable. It shaped how millions of people first experienced the Internet, dominated the browser market for years, and set the stage for the competition that drives innovation today.
While it ultimately fell behind modern web browsers in speed, security, and adaptability, IE’s story remains a reminder of both the power and fragility of technology leadership. Today, it lives on only in history—and in IE Mode within Microsoft Edge for legacy use cases—but its influence will always be part of the Internet’s foundation.
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