Did your computer fail to open a JNLP file? We explain what they are used for and recommend software that we know can open or otherwise handle your .JNLP files.

What is a JNLP file?

A .JNLP file is a Java Network Launching Protocol for Java Web Start file. JNLP is an acronym for Java Network Launching Protocol. Java is a programming language that uses the JNLP file format to launch and manage various Java applications over a network or the Internet. The JNLP files are saved in the XML file format and contain information about an application written in Java, e.g., where to download it and how to launch it.

Unlike typical web applets, JNLP files are not run within a user's Web browser. These files are actually downloaded onto a user's computer and are then run as regular Java applications. The files are used only for stand-alone applications.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension JNLP

While we know of one file format using the .JNLP file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .JNLP file.

Various JNLP file openers, viewers, etc.

These apps are known to open certain types of JNLP files. Remember, different programs may use JNLP files for different purposes, so you may need to try out a few of them to be able to open your specific file.

WinRARWinRARUser submitted
Java Web StartJava Web StartUser submitted
Java Platform SEJava Platform SEUser submitted
Kies Air Discovery ServiceKies Air Discovery ServiceUser submitted
PowerTeacher GradebookPowerTeacher GradebookUser submitted
JNLPJNLPUser submitted
AppletAppletUser submitted
IBM Java Web StartIBM Java Web StartUser submitted
Cognitive TutorCognitive TutorUser submitted
ClosetMaidClosetMaidUser submitted
We have not verified any software that we know for certain will work with JNLP-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with JNLP-files. If you know one, please use the 'Suggest a program' link below and tell us about it!