Top 10 Startups using C#

Two decades after its launch in 2000, C# continues to remain one of the most widely used programming languages in the world.

While originally aimed as a Java competitor by Microsoft, C# is now used to create games with the Unity game engine that powers more than a third of the top titles like Escape from Tarkov, Cities: Skylines, Hearthstone, The Elder Scrolls: Legends, etc.

C# is one of the fastest evolving programming languages with each update featuring substantial upgrades and improvements for better supporting modern workloads. According to a Stack Overflow Developer Survey (which itself uses C#), 29.81% of professional developers use C#, beating PHP and C++.

What is C#?

C# is a general-purpose, object-oriented, type-safe programming language that has its roots in the C family of languages. As mentioned earlier, it was introduced by Microsoft as a Java competitor in 2000 and is part of the ASP.NET ecosystem.

Essentially, when Sun did not want Microsoft to make changes to Java, the programmers at Microsoft took the best components of Java, C, and C++ and designed C# from the ground up.

Originally, C# was supposed to be simply a clone of Java. But since its second stable release, C# started to move in a different direction and instantly became among developers with features years ahead of its time.

Here are some of the top companies using C# in their tech stacks to run the day-to-day operations. If you are a new developer looking to start a new project, the following list should help you get started.

Top 10 Startups Using C#

According to Stackshare, here are ten of the best startups using C#.

Delivery Hero

Delivery Hero is a multinational online food delivery service that operates in over 50 countries internationally, partnering with over 500,000 restaurants.

Over the years, Delivery Hero has branched out of food delivery, becoming one of the largest names in q-commerce, i.e., delivering short batches of essentials in under an hour.

The company works with a large global ecosystem of riders, restaurants, and shops to deliver prepared meals, groceries, flowers, medicine, etc. 

Stack Overflow

An indispensable tool for programming professionals, Stack Overflow is essentially a forum and Q&A website that features topics from various sectors of computer programming.

The website functions as a platform where over 14 million registered users ask and answer questions or vote them up or down, in turn receiving reputation points and badges for their contributions. 


Founded in 2007, Trustpilot is one of the most popular consumer review websites which hosts business reviews and feedback from consumers about their buying and service experiences.

Users can create an account using an email ID or Facebook account and then leave a review for free. These reviews are extremely helpful when consumers want to purchase something from a new website store.


The peer-to-peer payment platform Venmo allows users to transfer funds to other Venmo users using a mobile app. Primarily, Venmo is aimed at friends and family who want to share payments without dealing with cash.

It can also be used to make purchases at authorised merchants in the US, using a Venmo MasterCard or scanning the QR codes in the store.


PedidosYa is a multinational Latin American food ordering company based in Uruguay that connects over 55,000 restaurants with millions of users across 13 countries in the LATAM.

In 2014, the German delivery partner Delivery Hero acquired a majority stake in PedidosYa, which made the platform a market leader in food delivery companies in Latin America.


The enterprise digital commerce platform VTEX allows businesses to manage their digital commerce strategies, enabling a faster time to market and better customer outreach.

Companies can build an online store, integrate orders and inventory across all sales channels, test revenue streams, and customise the app using an IO development platform that scales effortlessly as your business grows.

Clear Bank

ClearBank is the first new clearing bank in the UK in over 250 years and aims to deliver a new level of competition and transparency to the UK financial services sector.

Being a commercial bank, it offers no service to the public; instead, it enables its partners to offer real-time payment and banking services to their customers, making the transactions faster and safer and more accessible. 

Bagel Code

Launched in 2012 by a team of industry veterans, the South Korean global gaming company Bagel Code is involved in creating primarily casino-themed social games for all leading gaming platforms.

Over 45 million users worldwide play their titles like Club Vegas, Cash Billionaire, Jackpoty, Star Spins, and Bingo Lane, with friends or other online users anywhere, anytime. 


Agoda is an online travel booking platform and metasearch engine based in Singapore. It lists more than 2.5 million properties worldwide in over 200 markets globally, including China, India, Japan, Thailand, South Korea, etc.

Registered users can search for hotels, vacation rentals, and flights from the mobile app or website that suits their budgets and travel occasions. 


Deezer is a French online music streaming service that allows registered users to listen to music, audiobooks, radio, and podcasts from record labels like UMG, Sony Music, and Warner Music Group.

The platform currently has over 73 million licensed tracks and over 30,000 radio channels, making it one of the largest audio catalogues available in the market. Deezer is available in more than 180 countries with over 60 distribution partners across all industries.


One of the most exciting benefits of C# is that it can be deployed to create any type of app for several platforms including Windows, Console, native Android, IoT, reusable libraries, and much more. If you are a new developer looking for inspiration for your new project, this list should help you get some inspiration on what you can do with C#.

For deeper insights, do not hesitate to get in touch with one of the leading app hosting companies, where the experts can help you realise the full potential of the language.

Please read the article The Best Tools for Startups and Top 10 Startup Programming Languages.


What is C#?

A type-safe and object-oriented and programming language.

What are the advantages of C#?

– Cross-Platform
– Easy to read and understand
– Vast developer pool to code

What are ten of the best startups using C#?

– Delivery Hero
– Stack Overflow
– Trustpilot
– Venmo
– PedidosYa
– Clear Bank
– Bagel Code
– Agoda
– Deezer

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