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Download and Install OPS
OPS 3.4.0-9 was released on May 23, 2025.
Download OPS 3.4.0-9 View Release NotebookOPS 3.3 LTS (Long-Term Support)
Long-term support releases are backed up by our commitment to provide critical security and bug fixes until their end-of-life date. Learn more about our long-term support releases.
The latest LTS package was released on May 23, 2025 and will be supported until one year after the next LTS version is designated. Read the release notebook.
Download OPS 3.3.0-21 LTS View Release NotebookAll Releases
View all releases in our release archive.
Open Preprint Systems can be downloaded and hosted by you and your institution. Whether you prefer to host with a VPS, a cloud provider, or on-premise servers, read on to learn about our stable releases and support timelines.
Releases
Download one of the releases below and follow the instructions to install or upgrade the software.
OPS 3.5
OPS 3.5.0-1 was released on July 9, 2025. Version 3.5.0 is not yet designated LTS (Long-Term Support). This will likely happen in Q3 2025.
Download OPS 3.5.0-1 View Release NotebookOPS 3.4
OPS 3.4.0-9 was released on May 23, 2025.
Download OPS 3.4.0-9 View Release NotebookOPS 3.3 LTS (Long-Term Support)
Long-term support releases are backed up by our commitment to provide critical security and bug fixes until their end-of-life date. Learn more about our long-term support releases.
The latest LTS package was released on May 23, 2025 and will be supported until one year after the next LTS version is designated. Read the release notebook.
Download OPS 3.3.0-21 LTS View Release NotebookAll Releases
View all releases in our release archive.