15 Best Free DDoS Attack Tool Online

Distributed Denial of Service (DDoS) attack is a subdivision of the Denial of service (DoS) attack that overwhelms the targeted network, website, and server with fake traffic to disrupt normal traffic. Usually, the attacks are random, and the target is chosen automatically by DDoS attack tool online but DDoS attack online can also be specifically targeted to a particular network, website, and server. All the information given in this blog is purely educational we do not support any kind of illegal malware online activity. DDoS attacks are illegal in most of the country in the world and the individual can be jailed if found guilty for up to 10 years in the USA.  

15 Best Free DDoS Attack Tool Online

Best Free DDoS Attack Tool Online

DDoS attacks can be used for both good and bad things. Mostly it is used for notoriety purposes by hackers to disrupt the victim servers or services. There are loads of tool available to carry out DDoS attack online.

Below are listed the best free DDoS tool available to download with their features.

1. HULK (HTTP Unbearable Load King) 

HULK download page. 15 Best Free DDoS Attack Tool Online

This tool sends obscure and unique traffic to a web server. It’s a denial-of-service attack tool but the traffic it sends can be blocked and the attacker might not be fully anonymous. HULK claims to be created for research purposes only although it can be used for more than just research purposes.


  • A great volume of unique traffic is generated toward the targeted web server.
  • Harder to detect but not impossible.
  • Hits directly the servers resource pool by bypassing the cache engine.

2. Tor’s Hammer 

Torshammer download page

It is best used with the Tor network to remain unidentified while conducting a DDoS attack. To use it with the Tor network, use this Tor’s Hammer is created for testing purposes but it can be used for slow post-attack. Using Tor’s Hammer, the user can attack IIS and Apache servers. 


  • Specialized for anonymous attacks.
  • Also used to carry out demo attacks by pen testers on security structures.
  • Operates on level 7 of the OSI Model.

Also Read: How to Perform a DDoS Attack on a Website using CMD

3. Slowloris

Slowloris github page. 15 Best Free DDoS Attack Tool Online

Slowloris is a layered application that attacks threaded servers by using partial HTTP requests to open connections between the targeted Web server and a single computer then the connections are kept open for longer periods to fill and slow down the target servers with traffic.


  • Carry out attacks by sending legitimate HTTP requests.
  • Can keep the connection with the victim server as long it is needed.
  • Requires a minimal bandwidth on the targeted web server.

4. LOIC (Low Orbit Ion Cannon) 

LOIC download page

LOIC or Low Orbit Ion Cannon is a popular tool and one of the best DDoS attack tool online. The interface is very easy to use and LOIC sends HTTP, UDP, and TCP requests to the servers. It’s effective in seconds the targeted website will be down within seconds of the attack initiated but it does not hide your IP address even after using the proxy server. 


  • Mainly used to attack small servers.
  • Available on Linux, Windows, and Android.
  • Easy to use, few steps to initiate an attack.

Also Read: 18 Best Tools for Hacking

5. RUDY (R-U-Dead-Yet) 

RUDY download page

RUDY browses the target DDoS site automatically and finds the embedded web forms. It only executes short slow-rate, Layer-7 DDoS attacks that are implemented by using long-form field submissions which generate a low and slow rate of traffic.


  • Difficult to detect.
  • Interactive console menu.
  • Works at a slow rate.

6. PyLoris

Pyloris Blog and download page. 15 Best Free DDoS Attack Tool Online

PyLoris is a tool for testing a server’s vulnerability to exhaustion of connection by using the total number of simultaneous TCP connections if there is a restriction on the same. Services that have a high memory footprint per connection, or handle connection in independent threads are mostly prone to this form of vulnerability.  


  • Attacks can be made on SMTP, HTTP, FTP, Telnet, and IMAP.
  • Interactive and easy-to-use interface after installation.
  • Uses SOCK proxies and SSL connections.

7. DDOSIM (Distributed Denial of Service Simulator) 

DDOSIM download page

DDOSIM is to simulate the DDoS attack on the website as well as on the network. It attacks the server by replicating various Zombie hosts then these hosts develop a full TCP connection with the server or the network.


  • HTTP DDoS attacks can be made using valid requests.
  • DDoS attacks can be made using invalid requests.
  • Works on Linux and Windows.

Also Read: 23 Best SNES ROM Hacks Worth Attempting

8. Davoset

Davoset download page. 15 Best Free DDoS Attack Tool Online

Davoset is used to carry out attacks on websites by gaining access through other sites. This particular method is being used by hackers for malicious activity on the web recently. This tool helps you to carry out DDoS attacks with ease.


  • Provides support for cookies.
  • Free software that provides a command line UI to commit an attack.
  • Conducts an attack using XML external entities.

9. GoldenEye 

Golden eye download page

GoldenEye tool conducts an attack by sending an HTTP request to the targeted server. It utilizes all the HTTP/S sockets present on the targeted server for the DDoS attack.


  • Randomizes the GET, POST to get the mixed traffic.
  • Written in Python.
  • Easy to use.

10. OWASP HTTP POST            

Owasp homepage

Open Web Application Security Project (OWASP) HTTP Post helps you to test the network performance of your web applications. It enables you to compose a denial of service from a single DDoS machine online.


  • Users can choose the server capacity.
  • Free to use even for commercial purposes.
  • Enables the user to test against the application layer attacks.

Also Read: 7 Best Websites To Learn Ethical Hacking

11. XOIC 

Xoic download page. 15 Best Free DDoS Attack Tool Online

Xoic is a tool that conducts an attack on smaller websites by using TCP and UDP messages. The attacks carried out by Xoic can be easily detected and blocked.


  • Comes with three modes to attack.
  • Very easy to use.
  • Carries out DoS attacks with ICMP, UDP, HTTP, or TCP messages.

12. HOIC (High Orbit Ion Cannon)

HOIC download page

High Orbit Ion Cannon (HOIC) is a tool that was released to replace LOIC. It can carry out 256 simultaneous attack sessions at once. Filling up the target system with junk requests so that the legitimate request cannot be processed.


  • Totally free to use.
  • Available for Windows, Mac, and Linux.
  • Enable the users to control attacks with low, medium, and high settings.

Also Read: Top 11 Best Deep Web Browsers for Anonymous Browsing

13. Hyenae

Hynae download page. 15 Best Free DDoS Attack Tool Online

Hyenae allows you to produce multiple MITM, DoS, and DDoS attacks which come with a clusterable remote daemon and an interactive attack assistant.


  • Tons of features like ARP- Request flooding, ARP-Cache poisoning, ICMP-Echo flooding, etc.
  • Intelligent address and address protocol detection.
  • Smart wildcard-based randomization.


Thc-Ssl-Dos download page

THC-SSL-DOS is a tool that helps the user to carry out an attack on the target website successfully by exhausting all the SSL connections and turning the victim’s server down.


  • Users can verify the performance of the SSL.
  • Also exploits the SSL secure renegotiation feature.
  • Supports Linux, Windows, and macOS.

Also Read: What is Ethical Hacking?

15. Apache Benchmark Tool

Apache benchmark tool download page. 15 Best Free DDoS Attack Tool Online

Apache Benchmark tool is basically used to test a load of servers by sending numerous concurrent requests. Apart from this, it can also be used for carrying out a DDoS attack.


  • Can benchmark any HTTP server.
  • Displays result at the end.
  • Supports Windows and macOS.

Best DDoS Attack Tool for Windows

All the tools listed above are DDoS attack tool for Windows. Some are also available in another operating system like Linux and macOS.


DDoS attacks are illegal but there are ways it is used for totally legal things like blocking your own server or service that you don’t want to grab the attention of the people on the web, and we hope that your query for the best DDoS attack tool online is for some good and legal purpose. Hopefully, we have answered all your queries related to the best DDoS tool download. Do give us your feedback in the comments below.

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