Visual Studio Code in the browser
Split, merge, rotate, and extract PDF pages offline
PDFsam Basic is a desktop application for splitting, merging, rotating, extracting, and interleaving PDF pages. It processes documents locally and is available under AGPL-3.0 for major desktop platforms. This listing covers the open-source Basic edition; the separate Visual and Enhanced products have different capabilities and commercial terms.
Listing source: Original source. How we curate tools.