Rutba Office

Most free office software asks you to give something up: your file format, your privacy, your old mail, or your patience. This asks for none of those. Microsoft formats are the point rather than an afterthought, and so are the mail archives you have been carrying between computers for fifteen years.

Rutba Office is 7 applications on one login: Mail — Every account, every archive, one inbox — IMAP and SMTP, plus the archives other clients leave behind: Outlook .pst and .ost, .olm, mbox, .eml and .msg. Word — Documents that open the same everywhere — .docx on an engine we own, reading .odt, .rtf, .doc, Markdown and text. Worksheets — Real formulas and real recalculation — .xlsx with a full calculation engine, reading .ods and .csv. Presentation — Slides that survive the round trip — .pptx read, edited, rendered and presented, reading .odp. Pictures — A viewer that opens before you blink — every common format, EXIF, orientation and PDFs. Image — Crop, correct, annotate and export, non-destructively: your original is never touched. Video — Trim and export without a render farm — no ffmpeg, no native binaries, nothing to install.

What it does: opens what you already have: microsoft formats are the point, not an afterthought; works offline — no account, no sign-in, no telemetry and no network call; does not damage your files: only the parts deliberately edited are rewritten, and charts, pivot caches, macros, signatures and embedded media come back byte-for-byte; published source under the gnu agpl v3.0, with a commercial licence available; builds for windows, macos and linux, including a portable windows build and a linux appimage.

Built for anyone who needs microsoft formats to open correctly without a subscription, people carrying years of .pst, .ost and mbox mail between machines and organisations that want an office suite making no network calls at all.

Pricing runs Free, starting at $0 download. Products can be taken separately or together on one account and one invoice.