Download Jailbreak tools.

Every jailbreak process has its own operating system according to operating system. Most of the time, you must download a Windows/ Mac GUI (graphical user interface) based software (tool) to complete the process. Sometimes users can use online methods or IPA based Jailbreak methods as PC or Mac free.
Users can check the  iOS version  through Open Settings app, then go to General or just visit find your iOS version  page using the device. Then select the jailbreak tool  from the following list according to their device and iOS versions.

iOS 11 / iOS 11.0.1 / iOS 11.0.2 / iOS 11.0.3

Electra, LiberiOS, To.Panga jailbreak and C0F3 jailbreak available for iOS 11 to iOS 11.0.3 versions. Most of these methods are not stable because still under development. Also, Houdini Semi jailbreak supports to these iOS releases.

iOS 10.3.3

There are several jailbreak tool is available for these versions. These are Meridian jailbreak, g0blin Jailbreak, H3lix Jailbreak and C0F3 jailbreak. However, these numerous Jailbreak are in beta stage or developing mode.

iOS 10.3.2

H3lix Jailbreak is available for all 32-bit devices running iOS 10.3.2 Jailbreak. Meridian jailbreak,g0blin Jailbreak, and C0F3 jailbreak available for all iOS 10.3.2 64-bit devices. This jailbreak may not perfectly work due to still under development.

iOS 10.2.1

Users can jailbreak 32-bit devices using H3lix Jailbreak. Also Meridian jailbreak and C0F3 jailbreak available for all iOS 10.3.2  64-bit devices. These some jailbreak tools for the testing purpose and still in developing mode.

iOS 10.1.1 / iOS 10.1

Yalu 102 zJailbreak online method can use to download Cydia for iOS 10.1 and iOS 10.1.1 versions except iPhone 7 and 7 Plus. iPhone 7 and 7 plus running iOS 10.1.1 users need to use Extra_recipe+yaluX tool to install Cydia for iOS 10.1.1 version.

iOS 10.0.3 / iOS 10.0.2 / iOS 10.0.1 / iOS 10

There are many jailbreak tools such as H3lix Jailbreak, Meridian jailbreak, C0F3 jailbreak and Houdini Semi Jailbreak compatible with these versions. Unfortunately some of tools not fully working due to still under development.

iOS 9 to iOS 9.3.5

Several jailbreak tools are available for iOS 9 to iOS 9.3.5 jailbreak.
It is possible to jailbreak all the 32-bit devices running iOS 9.3.5 version of Phoenix jailbreak tool. The zJailbreak tool also can use to jailbreak both 32-bit and 64-bit devices running iOS 9.3.5 version for non-rooted jailbreak apps. 

iOS 8 / iOS 8.4.1

iOS 8.4.1 running 32-bit device users can jailbreak their device using EtasonJB tool.

Windows users can use TaiG 2 tool to jailbreak iOS 8.4 to iOS 8.0. PP jailbreak tool is the only solution for Mac users to install Cydia for this version.

All the iOS 8.1 to iOS 8 versions can jailbreak with Pangu8 tool for full functional Cydia.

iOS 11.1 / iOS 11.1.1 / iOS 11.1.2

Electra and LiberiOS available for iOS 11.1.2 to iOS 11 versions. To.Panga jailbreak also supported iOS 11.1.2 to iOS 11 only for developers. C0F3 also another jailbreak tool for these versions.       

iOS 10.2 Jailbreak

Yalu102 tool is available to jailbreak iOS 10.2 version running all the 64-bit devices. It has PC required method and Online method. Online Yalu102 jailbreak method is available under zJailbreak app store.
Same zJailbreak alternative solution supports to jailbreak all the 32-bit devices running iOS 10.2 version to install non system rooted jailbreak apps.
Anzhuang, Velonzy & Pangu8 JB app installer support to install jailbreak apps for iOS 10.3.3.

iOS 11.2 / iOS 11.2.1 / iOS 11.2.2

iOS 11.2.5 / iOS 11.2.6

iOS 11.2.5 / iOS 11.2.6 jailbreak is  possible with Electra. Dev code extraction method & UDID Registration method are compatible to install jailbreak apps for iOS 11.2.5 & iOS 11.2.6 versions.
Electra jailbreak is available for iOS 11.2 to iOS 11.2.2 versions. Also, zJailbreak provides jailbreak alternative for iOS 11.2 to iOS 11.2.2 versions. Anzhuang is the best alternative jailbreak solution exclusive on zJailbreak.
As well Houdini semi Jailbreak and Anzhuang jailbreak app installer available for iOS 11.1 to  iOS 11.1.2 jailbreak.
As well zJailbreak is the best jailbreak alternative solution for iOS 11 to iOS 11.0.3 Jailbreak.  Users can install partial jailbreak apps and tweaks with this method without enter into the System root.
Houdini  Semi Jailbreak will allow you install Themes, Tweaks, iOS customization apps for iOS 10.3.2. Also that is compatible with all iOS 10 versions except iOS 10.3.3.
Also you can use Anzhuang or Velonzy as the iOS 10.3.2 Jailbreak solutions because no available full functional jailbreak tool for iOS 10.3.2 version.
You can jailbreak iOS 10.2.1 version with Saigon tool as Semi Untethered. But 64-bit devices only.
Houdini semi jailbreak also support to install jailbreak apps to iOS 10.2.1. zJailbreak alternative solution is also available to install third party jailbreak apps for iOS 10.2.1 version.
Above same H3lix Jailbreak, Meridian jailbreak,C0F3 jailbreak and Houdini Semi Jailbreak compatible with this version.
Apart from these methods H3lix Jailbreak, Meridian jailbreak,C0F3 jailbreak and Houdini Semi Jailbreak compatible with these versions.
All the 64-bit users who works iOS 10 to iOS 10.0.3 versions can jailbreak with Yalu102 PC needed method or zJailbreak Yalu102 online method. Both methods provide full functional Cydia.
If you are 32-bit device user, it is available jailbreak alternative solution under the zJailbreak app store. Click here to get all these solutions to jailbreak iOS 10 to iOS 10.0.3 versions.
Note - Pangu8 JB app installer is currently disabled. Sorry for the inconvenience.

iOS 11.3

iOS 11.3 can be jailbreak with Electra. Anzhuang and Velonzy jailbreak app installers compatible with iOS 11.3 jailbreak. You can install jailbreak apps to iOS 11.3 using these app installers.
JailbreakMe 4.0 will allow you to jailbreak iOS 9.3.4  to 9.1 running all 32-bit devices. That is an online tethered Jailbreak tool, and finally, it will install Cydia on your devices.
BetterHomeDepot jailbreak tool can recommend for 32-bit device users who work with iOS 9.3.4 version. This tool supports to jailbreak iOS 9.1 to iOS 9.3.4 versions as Semi-Tethered jailbreak.
Pangu untethered (English) tool & PP jailbreak tool are available to jailbreak iOS 9.3.3  to 9.2 versions only for 64-bit devices.
Pangu9 tool supports to jailbreak iOS 9 to iOS 9.1 running all 64-bit devices.
Go to iOS 9.3.5 Jailbreak page for more details.
Click on the iOS 8.4 jailbreak page for more details.

iOS 11.4

UDID Registration method and Dev code extraction method compatible with iOS 11.4 jailbreak. Also, it has Apricot iOS and IPA + Cydia impactor method.

iOS 11.3.1

Electra Jailbreak available for iOS 11.3.1 to install Cydia. Anzhuang and Velonzy Jailbreak app installer also compatible with iOS 11.3.1 jailbreak to install Jailbreak apps on iOS devices.

iOS 12

iOS 12 is the next Major upcoming iOS version. Apple seeded iOS 12 beta 9 with new features. Houdini Semi Jailbreak and Anzhuang are compatible with iOS 12 Jailbreak.

iOS 11.4.1

Apple released iOS 11.4.1 as the latest version. Anzhuang and Velonzy compatible with iOS 11.4.1 jailbreak to install jailbreak apps on iOS 11.4.1 devices.