Yes, there are several free journals that publish systematic literature review protocols. Here are a few options:

• PROSPERO is an international registry of systematic review protocols. It is free to register your protocol, and you can also choose to publish it in the registry's journal, PROSPERO Open.

📷Opens in a new window📷www.bsuh.nhs.uk

PROSPERO website

• The Joanna Briggs Institute (JBI) is an Australian research institute that publishes a number of open-access journals, including the JBI Evidence Synthesis journal, which publishes systematic review protocols.

📷Opens in a new window📷www.researchgate.net

Joanna Briggs Institute website

• The Open Science Framework (OSF) is a repository where you can store and share your research, including systematic review protocols. OSF also has a number of pre-registration options for systematic reviews, including a template for a systematic review protocol.

📷Opens in a new window📷www.cos.io

Open Science Framework website

• Campbell Systematic Reviews is an international collaboration that promotes the use of systematic reviews in public health. Campbell publishes a number of open-access journals, including the Campbell Systematic Reviews journal, which publishes systematic review protocols.

📷Opens in a new window📷onlinelibrary.wiley.com

Campbell Systematic Reviews website

• BMC Research Protocols is an open-access journal that publishes protocols for all types of research, including systematic reviews.

📷Opens in a new window📷typeset.io

BMC Research Protocols website

In addition to these dedicated journals, many other journals publish systematic review protocols. You can search for open-access journals that publish systematic review protocols in your field of interest using a journal finder tool, such as JournalGuide or Sherpa/RoMEO.

Pradeep Paul George still, there are many problems in publishing a review paper in reputed and free journals.