Rack
Rack is a minimal, modular interface and invocation convention that operates between Ruby web servers and web applications to standardize how HTTP requests and responses are exchanged.
It translates raw HTTP requests into a 
CGI-style environment defined by RFC 3875, supports middleware stacking for step-by-step request and response processing, and is implemented by servers such as 
Phusion Passenger, Puma, Unicorn, and 
Thin.
According to our data, Rack ranks 21th among the backend frameworks we track.
It has 0.4% of the backend framework market share and is detected on 0.05% of all websites.
It is especially popular in Taiwan, where it appears on 1.2% of all websites, and in Japan, where it appears on 0.1%.
- 🏠 Website
- 🔗 Links
GitHub💸 Pricing
Rack is available for free.
📊 Rankings and Market Share
- Backend Frameworks
- Rank: 21
- Market share: 0.4%
- Standards
- Rank: 41
- Market share: 0.06%
🏆 Rack Awards
- ⭐ 7th most popular in Taiwan in the Backend Frameworks category.
- ⭐ 10th most popular in Japan in the Backend Frameworks category.
- 🔥 12nd most popular in Australia in the Backend Frameworks category.
- 🔥 13rd most popular in Canada in the Backend Frameworks category.
- 🔥 18th most popular in the United States in the Backend Frameworks category.
- 🔥 19th most popular in Taiwan in the Standards category.
- ⬆️ 35th most popular in Japan in the Standards category.
- ⬆️ 38th most popular in Canada in the Standards category.
- ⬆️ 38th most popular in Australia in the Standards category.
⚡ Sites Using Rack
We have data on 2,172 websites that use the Rack backend framework. Here is a list of some of the top ranked ones.
The highest rated site using Rack is tabor.ru.
| # | Website | Rank | Country | Language |
|---|---|---|---|---|
| 1 | #792 | Russia | Russian | |
| 2 | #2,515 | American English | ||
| 3 | #2,583 | English | ||
| 4 | #3,747 | United States | English | |
| 5 | #7,588 | United Kingdom | English | |
| 6 | #7,839 | English | ||
| 7 |  teamtailor.com |
#8,083 | Sweden | American English |
| 8 | #8,459 | English | ||
| 9 | #11,015 | Italy | ||
| 10 | #14,725 | United Kingdom | British English | |
| 11 |  themeforest.net |
#16,174 | Australia | English |
| 12 | #16,217 | Japan | Japanese | |
| 13 | #16,361 | United States | American English | |
| 14 | #18,362 | United States | English | |
| 15 | #18,663 | United States | English | |
| 16 | #20,067 | Australia | English | |
| 17 | #20,251 | United States | English | |
| 18 | #20,688 | Australia | English | |
| 19 | #21,178 | United Kingdom | English | |
| 20 | #25,290 | Switzerland | German |
📈 Usage Statistics
Most of the sites that use Rack:
- are located in the United States
- have content in English
- use the .com domain extension
- fall into the Business category.
Most of the sites using Rack are from the United States, Japan, and Taiwan.
- United States 22.3%
- Japan 15%
- Taiwan 13.7%
- Canada 6.9%
- Australia 5.8%
- Germany 5.6%
- United Kingdom 3.6%
- Belgium 2.4%
- France 2.4%
- Other 22.3%
Most Rack users speak English, Chinese, or Japanese.
- English 65.8%
- Chinese 9.8%
- Japanese 9.6%
- German 3.1%
- Spanish 2.2%
- Russian 2%
- French 2%
- Dutch 1.4%
- Italian 0.7%
- Other 3.4%
The Rack backend framework is especially popular on .com, .org, and .com.tw top-level domains.
- .com 44.8%
- .org 11.2%
- .com.tw 6.7%
- .net 3.8%
- .jp 3.1%
- .ca 3%
- .org.au 2.7%
- .de 2.3%
- .be 1.4%
- Other 21%
The primary market segments for websites utilizing Rack include business, marketing and merchandising, and Internet services.
- Business 14.9%
- Marketing/Merchandising 12.6%
- Internet Services 7.2%
- Online Shopping 6.5%
- Entertainment 5.7%
- Education/Reference 5.3%
- Sports 5.3%
- Non-Profit/Advocacy/NGO 4.6%
- Blogs/Wiki 4.2%
- Other 33.7%
🕵️ Similar Technologies
These are some of the best Rack alternatives.
🆚 Compare Alternatives
Compare Rack to…
- 🕵️ Similar frameworks
- ⭐ Market leaders
- 💡 More alternatives
- 🔎 All options
💬 Frequently Asked Questions
Where is Rack from?
Rack is from Munich, Germany.
Is Rack free?
Yes, it is a free backend framework.
Which country uses Rack the most?
The majority of Rack users are from the United States.
Who uses Rack?
According to our data, Rack is used on thousands of sites, including such established ones as tabor.ru,
actionnetwork.org, and
knowyourmeme.com.
Do academic institutions use Rack?
Yes. Overall, we know of 2 academic websites in the United States that use Rack.
How does Rack compare to the competition?
Rack is a moderately popular backend framework, ranking ahead of 48 other backend frameworks we track.
What are the alternatives to Rack?
Alternatives and possible competitors to Rack may include CGI, 
ESI, and 
Ruby on Rails.
👉 See Also
- ✨ Related technologies
🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 4,009,087 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.