OmniSide

OmniSide is a browser-sidebar AI assistant that combines multi-model chat, side-by-side model comparison, writing, translation, grammar checking, summaries and OCR, with apps for desktop, mobile and the web.

OmniSide is an AI assistant that lives in the browser sidebar and bundles several everyday text tasks into one place. Chat, summarizing, translation, grammar checking, writing help and OCR are all reachable without leaving the page being read, and the same account extends to Mac, Windows, iOS, Android and the web. The product is organized around a handful of dedicated workspaces. A chat center lets a user talk to several leading AI models and compare what each says. A dual-track mode runs two models in parallel on the same task so differences in quality, angle and logic are visible side by side. The writing workshop takes a core idea plus a chosen format, such as an email, blog post, social comment or formal paragraph, and returns a structured draft. The translation engine covers major world languages and aims to keep terminology and tone intact, while the grammar tool scans for spelling, grammar and phrasing problems and suggests polished corrections. An image text recognition tool pulls text and tables out of images and PDFs. In practice, most use happens through three entry points: the sidebar itself, a smart toolbar that offers instant explanations, translations and summaries on selected text, and a search assistant for quick questions. User reviews quoted on the homepage also mention PDF uploads for summaries, screenshot questions, image generation and voice input, though those are reported by users rather than documented by the vendor. The homepage claims more than 10 million users and a 5.0 rating on the Chrome Web Store, and installation for Chrome and Edge is advertised as free. OmniSide suits students, researchers, multilingual professionals and anyone who reads and writes heavily online and would rather not juggle separate subscriptions and tabs for each model. It competes with other browser-sidebar assistants and multi-model chat aggregators, differentiating itself mainly through the side-by-side model comparison and the breadth of bundled utilities. Details on paid tiers, usage limits and model lists are not given on the homepage.