Skeinos

Skeinos adds a sidebar to Claude, ChatGPT, Gemini, and Perplexity so your chats stop living in four separate lists. Nested folders with colors and icons, drag chats in, pin what matters, archive the rest. One search covers titles and message text across all four sites at once, filtered by site, folder, tag, or date. There is also a prompt library with fill-in blanks like {{topic}} that drops into any composer with Ctrl+/ (Cmd+/ on Mac), and saved instruction profiles you can switch between without retyping them.

It is for people who use more than one assistant every day and keep losing track of which one they worked something out with last week. There is nothing new to log into. The panel renders on the page you are already on, and each site's own history stays untouched.

On privacy: everything stays on your device. Conversations, titles, and the search index live in your browser and are never sent anywhere, on any plan. No account, no ads, no analytics, no telemetry. Skeinos requests host permissions for the four supported sites and nothing else, never <all_urls>, and never anything that can read your logins.

Skeinos is not affiliated with Anthropic, OpenAI, Google, or Perplexity.