Plexii - 2026 Pricing, Features, Reviews & Alternatives

Plexii is a local-first, all-in-one desktop workspace for Mac and Windows that replaces a fragmented stack of productivity tools with a single offline-capable application. Work is organized into Desks, each functioning as a dedicated canvas where notes, tables, files, browser windows, timers, diagrams, and mind maps coexist side by side for a single task or project. Desks are grouped into Rooms, providing a structured hierarchy for managing multiple workstreams. Plexii targets individual professionals, teams, and enterprises across real estate, graphic design, marketing, education, and startups, with plans scaling from a free personal tier to a self-hosted Enterprise deployment with data residency options.

The platform ships a full office suite under the PlexiiOffice umbrella: PlexiiWrite for documents (.docx in/out), PlexiiCells for spreadsheets (.xlsx in/out), PlexiiDeck for presentations (.pptx in/out), PlexiiDraw for diagramming, and PlexiiDesign for visual work. Beyond documents, Plexii integrates a built-in browser, meeting transcripts, chat and calls, mail with e-signatures via PlexiiSign, plans and milestones with a time-blocking calendar, a People directory with a live People Map, and a Focus task manager. Automation is handled through Flows, macro launching through SpeedDeck, and knowledge management through PlexiiBrain, which combines a searchable knowledge base with decision tracking. Storage is local-first with encrypted sync; PlexiiVault applies master-password encryption so data remains under the user's control. No third-party analytics are used, usage data is first-party and off by default, and AI prompts are never used for model training.

Plexii includes an AI assistant grounded exclusively in the user's own documents, sheets, and notes, with a citation and trace attached to every claim. Proposed AI changes are delivered as discrete cards that the user applies individually or in bulk; nothing is modified without explicit approval. Multi-step agent tasks include a stop button for mid-process intervention. The AI drafts and rewrites documents, fills spreadsheet formulas, builds slides and diagrams, drafts emails (Pro and above), and can configure a full Desk from a one-sentence description. Live web search is available on Pro and above. Plexii supports Claude Haiku on the Free plan, Claude Sonnet on Pro and Team, and Claude Opus on Pro+, with the option to supply a personal Anthropic API key or consume managed AI credits included in each plan.