You probably use a dozen web apps before lunch. Gmail, Google Docs, Slack, Canva, your bank's dashboard. If you're thinking about building a software product, looking at how these tools work is one of the fastest ways to picture what yours could be.
The short version: a web application is software that runs in your browser. You don't install it from an app store, and it works on any device with a modern browser. Google Docs, Figma and Airbnb are all web apps. For many founders, a web app is the fastest and most affordable way to get a product in front of real users, because you build one version that works everywhere and ship updates the moment they're ready. The tradeoff is more limited access to phone hardware and no app store presence.
Below are 15 examples grouped by the job they do, a few web apps our team has built for clients, and a plain-language guide to deciding whether a web app fits what you want to build.
What Is a Web Application?
A web application is an interactive program you use through a web browser. It runs on a server, and the browser shows you the interface. You log in, click, type, drag and save, and the app responds.
That interactivity is what separates a web app from a regular website. A website mostly shows you information: a restaurant's menu, a company's About page. A web app lets you do something: edit a document, book a stay, manage a project, pay an invoice. Many sites blend the two. A marketing site with a sign-up form or a shopping cart has a small web app inside it.
Good web apps are responsive, which means the layout adjusts to a laptop, a tablet or a phone. They need an internet connection for most tasks, although some are built to keep working offline for a while and sync once you reconnect.
Web App vs. Website vs. Mobile App
Founders often ask which of the three they should build. Here's the quick distinction:
- Website: mostly content. Visitors read, browse and contact you.
- Web app: interactive software in the browser. Users log in and get work done.
- Mobile app: software installed from the App Store or Google Play, with full access to the phone's camera, sensors, notifications and offline storage.
There is also a middle ground. A progressive web app (PWA) is a web app that can be installed to a home screen and can work offline, and a hybrid app wraps web technology inside a mobile app shell.
If you're weighing these options for your own product, we go deeper in Mobile App vs. Web App vs. Website: Which Should You Build? and 20 Pros and Cons of Building a Mobile App vs. a Web App.
15 Web Application Examples, Grouped by the Job They Do
Most lists of web apps are just famous names. We've grouped these by the problem each one solves, because that's the question that matters when you're planning your own product: which of these is closest to what my users need?
Work and Collaboration
1. Google Docs
Google Docs lets several people write and comment on the same document at once, and it saves every change automatically. It's part of Google Workspace, alongside Sheets, Slides and Gmail. You can use it offline in Chrome or Edge, but only after you turn on offline access; by default it needs a connection.
What founders can learn: real-time collaboration and autosave have become the baseline users expect. If people will work together in your product, plan for it from the start rather than bolting it on later.
2. Microsoft 365
Word, Excel and PowerPoint used to be software you installed from a disc. Today they also run in the browser as part of Microsoft 365, so teams can open and edit shared files from any computer. It's one of the best known enterprise app examples for a reason.
What founders can learn: even the most entrenched desktop software moved to the web. If your competitors still require an install, a browser-based version can be a real advantage.
3. Slack
Slack organizes team conversations into channels and runs in the browser as well as in desktop and mobile apps. Many teams first try it in a browser tab before anyone installs anything.
What founders can learn: a web version lowers the barrier to trying your product. A new user can click a link and be inside your app in seconds.
4. Notion
Notion combines documents, wikis, task lists and databases in one flexible workspace. Users build the structure they need out of simple blocks.
What founders can learn: flexibility can be the product. Notion also shows the cost of that choice: a blank, flexible tool needs strong templates and onboarding so new users aren't lost.
5. Trello
Trello replaces sticky notes on a wall with digital boards, lists and cards. Teams drag cards from "To do" to "Done" and everyone sees the same board.
What founders can learn: a single, clear visual idea can carry a whole product. Trello is easy to understand in the first ten seconds, and that is a big part of why it spreads inside teams.
Design and Creation
6. Canva
Canva gives non-designers templates and drag-and-drop tools to create social posts, presentations, logos and videos, all in the browser.
What founders can learn: a web app can deliver features people once assumed needed heavy desktop software. Canva wins by removing steps, not by adding features.
7. Figma
Figma is a design tool that runs in the browser, with several designers and reviewers working in the same file at the same time. Sharing a design is as simple as sharing a link.
What founders can learn: being browser-based can change how a whole profession works. Figma made collaboration the core of design work, not an export step at the end.
Commerce and Marketplaces
8. eBay
eBay connects buyers and sellers around the world, with auctions, fixed-price listings, seller ratings, filters and search.
What founders can learn: a marketplace is really two products, one for buyers and one for sellers. Trust features like reviews and ratings matter as much as the listings themselves.
9. Airbnb
Hosts use Airbnb's web app to upload photos and publish listings, and guests use it to search, compare and book stays, from any device and browser.
What founders can learn: browser access lets you serve every kind of user, including people who would never download an app just to try you once.
10. Uber (m.uber)
Most people think of Uber as a phone app, but Uber also built a lightweight web version, m.uber, so riders can request a ride from a browser. When Uber's engineering team described it in 2017, the core ride-request app was about 50kB and designed to load quickly even on slow 2G networks (Uber Engineering).
What founders can learn: a small, focused web app can reach users your native app can't, such as people with older phones, limited storage or slow connections. Build the core action first and keep it light, the same principle behind a good MVP checklist.
Media and Social
11. Netflix
Netflix streams movies and shows in the browser as well as through its TV, phone and tablet apps. Subscribers can pick up where they left off on any device.
What founders can learn: content platforms are a natural fit for the web. If your product is about delivering media or information, the browser is often your widest door.
12. Spotify's Web Player
Spotify's web player at open.spotify.com lets you stream music without installing anything, and it can be installed as a progressive web app on a computer. Spotify's iPhone and Android apps are still native apps.
What founders can learn: you don't have to choose only one. Many successful products run a web app and native apps side by side, each serving the situations it handles best.
13. Facebook
Facebook began as a website at a single university and grew into one of the most used web applications in the world, later adding mobile apps. Messaging, groups and live video all run in the browser.
What founders can learn: many products that feel "mobile first" today started as web apps, because the web was the fastest place to launch, learn and grow.
Business Operations
14. QuickBooks Online
QuickBooks Online moved small-business accounting into the browser. Owners and their accountants can see the same books from different places.
What founders can learn: web apps are ideal when several people outside one office need access to the same data, such as a business and its accountant, or a company and its customers.
15. Calendly
Calendly turns the back-and-forth of scheduling a meeting into a single link. The person booking doesn't need an account or an app.
What founders can learn: some of the best web apps do one small job extremely well. You don't need a huge platform to build a useful product.
If these examples feel too big to start with, remember that every one of them began smaller. Our look at SaaS MVP examples shows what some well-known products looked like in their first versions.
Web Apps Designli Built
Famous examples are useful for inspiration, but they were built by companies with thousands of engineers. Here are a few web apps our team has built for clients, closer to what a growing business typically needs.
- National Trench Safety: a customer portal: We rebuilt NTS's WorkZone customer portal so customers can see their contracts, equipment pickups and charges in one place, using data from the company's Infor ERP system. Read the National Trench Safety story.
- Freightmate: a trucking SaaS platform: Designli runs Freightmate's dedicated product team. In the first sprint, fixing inefficient queries cut dashboard map load times from roughly 33 seconds to about 8. Read the Freightmate story.
- Behind the Knife: a surgical e-learning platform: We built a custom web application and a mobile app with a gated content library and e-commerce. Read the Behind the Knife story.
- AskIris: a hospital supply tool: Supply room managers use an admin web portal, while nurses use a cross-platform mobile app. Read the AskIris story.
- MEO Continuity: an enterprise business-continuity platform: Instead of a static, hundred-page planning document, enterprises use MEO's portal to build and keep updating a living Business Continuity Plan they can share with stakeholders. Read the MEO Continuity story.
You can see more in our success stories.
Types of Web Applications
Web apps can be sorted a few different ways. These are the types you're most likely to hear about when planning a product.
Static
A static web app shows content that doesn't change based on who's viewing it. It loads quickly, but updating it means editing and republishing the code. A simple portfolio is a good fit.
Dynamic
A dynamic web app pulls fresh information from a server depending on the user, time or place, such as the latest weather, stock prices or your own account data. Most web apps are dynamic.
Single-Page vs. Multi-Page
A single-page application (SPA) loads once and then updates parts of the screen as you use it, which feels fast and app-like. Gmail and Trello work this way. A multi-page application (MPA) loads a new page for each major step, like many online stores and news sites. Multi-page apps are often simpler to make visible in search engines, while single-page apps usually feel smoother for logged-in users. Many products mix both.
Progressive Web Apps (PWAs)
A PWA is a web app that can be installed to a home screen or desktop, can work offline for some tasks and, on most devices, can send notifications. It sits between a web app and a native mobile app. Learn more in What Is a Progressive Web App?
Portals
In a portal, each user signs in to a personalized account: a customer checking orders, a patient viewing results, a partner downloading reports. Portals are one of the most common web apps businesses build for their own customers. Our guide to client portal software covers when to buy one and when to build.
E-commerce
E-commerce web apps handle product catalogs, carts, payments and order tracking. eBay is an example at scale; many businesses build smaller, specialized versions for their own products.
Content Management Systems (CMS)
A CMS lets non-technical teams publish and update content without touching code. Many websites are built on one, and many web apps include one for their admins.
AI-Powered Web Apps
A growing number of web apps use AI to summarize, recommend, write or answer questions inside the product. The web is often the quickest place to add these features because updates reach every user at once. If you already have a product, see how to add AI to your app.
Advantages and Disadvantages of Web Applications
Advantages
- Faster to market. Web apps are usually faster to build than mobile apps, and you don't wait for app store approval.
- One version for every device. You build and maintain a single product for Windows, Mac, iPhone and Android users.
- Instant updates. Changes go live for everyone as soon as you ship them.
- Easy to find and share. Web apps can show up in search results, and anyone can open one from a link.
- Easy to connect. Web apps work well with other systems, from payment providers to the ERP or CRM a business already uses.
Disadvantages
- Needs a connection. Most web apps don't work offline unless they're built to.
- Browser differences. Features can behave differently from one browser to another, which takes testing.
- Limited phone hardware access. Features like Bluetooth, advanced camera controls and some background tasks are harder or impossible from the browser.
- No app store presence. Some people only look for apps in the App Store or Google Play.
| Feature | Standard web app | Progressive web app (PWA) | Native mobile app |
|---|---|---|---|
| Development cost | Lower | Medium | Higher (often iOS and Android) |
| App store required? | No | No | Yes |
| Offline use | Limited | Yes, for cached content and tasks | Yes |
| Push notifications | Limited | Yes on most devices; on iPhone only once installed to the home screen | Yes |
| Hardware access | Basic (camera, location) | Somewhat more | Full (Bluetooth, sensors) |
| Often best for | SaaS, portals, internal tools | E-commerce, content, light mobile use | Hardware-heavy or high-performance apps |
Budget is usually part of this decision. Our guide to what it costs to make an app explains the main cost drivers.
FAQs
What's the difference between a website and a web app?
A website mostly presents information for people to read. A web app lets people do something: log in, create, edit, buy or manage. Many sites include both, such as a company site with a customer login.
Is Netflix a web app?
Netflix is available as a web app you can use in a browser, and it also has native apps for TVs, phones and tablets. Many large products work this way.
Is Google a web app?
Google Search is a website with some web app features. Google's products like Gmail, Docs, Sheets and Calendar are clear examples of web apps.
Can a web app work offline?
A standard web app needs an internet connection. A progressive web app can store content and data on the device so some tasks keep working offline. Google Docs, for example, can work offline once you turn that setting on.
Is a web app as secure as a mobile app?
It can be. Security depends on how the app is built: encrypted connections (HTTPS), careful handling of data and regular updates. One advantage of web apps is that a security fix reaches every user as soon as it's deployed, without waiting for people to update an app.
Can I turn my web app into a mobile app later?
Often, yes. If the product is built with a clean separation between its core logic and its interface, much of the work can be reused for a mobile or hybrid app later. Planning for that early saves you from a full rewrite.
Building Your Own Web App
The examples above have something in common: each started with one clear job for its users and grew from there. The right choice between a web app, a PWA and a native app comes down to who your users are, where they'll use your product and what it needs to do.
If you're starting from scratch, TractionLab is our 90-day engagement built around getting a working product in front of a real user by Day 30 and reaching first revenue by Day 90.
If you already have a web app and something feels off, such as slowing performance, growing technical debt or unclear results, Impact Week is a $1,700 one-week intensive: a top-to-bottom review of your code, user experience and analytics that ends with a scored findings report and a 90-day plan.
Want to talk through your idea? Schedule a free consultation or explore our custom web app development services.
